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Animals can have down syndrome?
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Animals can have down syndrome?
This extra chromosome's effects are expressed widely across the body and its impacts vary among individuals. 363 votes, 41 comments. In fact, 80 percent of the animals that live in Australia only can be found there, aCC0rding to Kids Wor. Other unusual facial features may also be present such as a short neck, small head, abnormally shaped ears, and eyes. Recent genetic enhancements in the development of DS models, including the new TcHSA21rat model ( Kazuki et al. More than a little insulting to people with Down's Syndrome. We report a case of chimpanzee trisomy 22 in a captive-born female. Dogs have more chromosomes than humans (38 pairs, to be exact), yet there is no evidence that they can develop Down Syndrome. Conclusion. This soft marker has a higher correlation to Down syndrome than any other. According to the National Down Syndrome Society, "Down syndrome (also known as trisomy 21) occurs when an individual has a full or partial extra copy of chromosome 21. Jan 1, 2024 · This article, ‘Can Cats Have Down Syndrome?: Unveiling the Mystery’, delves into the intriguing world of feline genetics to explore this question. All animals can develop chromosomal defects, including dogs. The regions on Hsa21 are conserved with their synteny on mouse chromosome 10, 16 and 17. However, cats can suffer from genetic disorders that appear to resemble Down syndrome. The syndrome gets it name from a character in Shakespeare’s “Hamlet. Jan 9, 2020 · Down syndrome is a genetic disorder that causes a combination of physical and mental symptoms. Some people may wonder if animals on the list of most annoying animals can have Down syndrome. From playful dolphins to majestic elephants, these remarkable beings defy stereotypes and showcase the beauty of differences in the animal kingdom. Can down syndrome affect dogs? Take a look at the adorable pictures of these animals. Disabled adults often need a lot more care than able-bodied people. Unlike humans, dogs with Down syndrome can be taught to communicate with other animals, including humans. In today’s digital age, there are plenty of online animation tools that can help. Signs, even the physical ones, don't usually appear until after a few years from birth. More studies and surveillance are needed to understand how SARS-CoV-2 is spread between people and animals. However, it can also occur in animals, including cats. Are Donkeys Mutated Horses Conclusion. The first step in creating online animations is selecting the right an. While many people affected with Down syndrome have similar physical attributes, each person has their own individual genetic makeup and personality. Goats can't have Down Syndrome. If you have noticed that your bird behaves differently, you can be sure that your pet does not have Down Syndrome. Down syndrome in humans is a chromosome aberration caused by the presence of a third copy of chromosome 21 (HSA21), or trisomy 21 (Down 1866; Jacobs et al. While dogs can have genetic conditions, those involving extra chromosomes are less viable, and affected dogs may not survive. Animals with Down syndrome are just like any other animal, they just have an extra chromosome. In dogs, sundowners syndrome is part of canine cognitive dysfunction syndrome (CDS), which can also be called doggie dementia. Down Syndrome is a genetic condition that occurs in humans when there is an extra copy of chromosome 21, leading to a number of distinctive characteristics and associated health problems. For this chapter we have merged and substantially updated two of our prior reviews on genetic and epigenetic pathways in human Down syndrome (DS) and mouse models of Ts21 (Xing et al 2017b). In animals, the condition typically leads to skeletal abnormalities, heart defects, and a reduced life expectancy. Unusual physical appearance - Dogs with Down syndrome have dwarf-like faces, short necks, and small heads. Aliya McCullough, Fetch's on-staff veterinarian, tells The Dig. Yes, cats can be born with Down Syndrome. However, the complexity of DS pathogenesis has made developing appropriate animal models an ongoing challenge. Jun 28, 2024 · The biggest difference is that humans have 23 pairs of chromosomes, while dogs have 39. Finding the right treatments and coping methods can make things much smoother for everybody involved Rett syndrome. HIV (human immunodeficiency virus) and AIDS (acq. More than a little insulting to people with Down's Syndrome. And in case you've ever wondered: no, dogs can't have Down syndrome. Chimps and apes have also been observed to get Down syndrome. People with Down syndrome can have physical problems, and/or intellectual disabilities. Down syndrome occurs when a person is born with an extra partial or entire copy of the 21st chromosome, a condition called trisomy 21. Down Syndrome is a genetic condition that is caused by the presence of an extra copy of chromosome 21 in humans. An early menopause can be related to cigarette smoking, higher body mass index, racial and ethnic factors, illnesses, and the removal of the uterus. Jan 1, 2024 · This article, ‘Can Cats Have Down Syndrome?: Unveiling the Mystery’, delves into the intriguing world of feline genetics to explore this question. Lions can also have similar Down syndrome problems due to abnormal chromosome mutation and inbreeding problems. Given that cats have just 19 pairs of chromosomes, they can’t have Trisomy 21. Source: NIH/National Human Genome Research Institute. According to this syndrome, one of the chromosomes is extra. "People born with Down's syndrome can live into their seventies," Nicola says. [ 18226 : Sternbach H ] Also known as serotonin. Alport syndrome is an illness th. Discover the type, causes, and kinds of effects it can have. Asperger's syndrome doesn't need to be "cured," but understanding and support can help you live in a world designed for nonautistic people. These cats may look and behave very differently from other cats from the same litter. Monkeys cannot have Down syndrome. Children with down syndrome often have this difficulty. A Google search for "animals with Down syndrome" yields pages upon pages of articles, videos, and images purporting to depict "inspiring" or "paws-itively adorable" creatures with this genetic disorder that results in various physical and mental disabilities. The new mouse model shows milder cognitive traits compared to a previously studied Down syndrome mouse model. While the condition is well-documented in humans, its occurrence and impact in animals is not fully understood. Feb 27, 2024 · Answer: Cats with Down syndrome are capable of forming strong bonds with their owners, and with love, patience, and understanding, these bonds can grow even stronger over time. The ultimate goal of Down syndrome (DS) research is to design therapies that improve quality of life for individuals with DS by understanding which subsets of Hsa21 genes contribute to DS-associated phenotypes throughout the lifetime. Here this explanation and 20 pictures animals who have down syndrome; Take a look at the adorable pictures of these animals. Aliya McCullough, Fetch's on-staff veterinarian, tells The Dig. It causes the pup to paddle or "swim" due to their inability to stand or walk. People with suspected or confirmed COVID-19 should avoid contact with animals. But it does suggest that studying monkeys may help us understand what's going on in the brains of people with autism and identify the causes of the condition. Many of these conditions are now treatable, so most people with Down syndrome lead healthy lives. Mar 16, 2022 · For one, humans have 23 sets of chromosomes while dogs have 39 and cats have 19. Now, other animals don't seem to get this specific hominid disorder. The classification of DS and later the discovery of human Ts21 in cells isolated from individuals with this syndrome (LeJeune et al. There have been several chimpanzees found. After 35 years of age, DS individuals exhibit neuropathology that is typical of Alzheimer's disease (AD) and frequently show premature aging. Yes, animals can have Down syndrome. Activities: Choreograph a dance together! Play Freeze Dance - when the music stops, everyone freezes! Musical Chairs - when the music stops everyone sits. The incidence of trisomy is influenced by maternal age and differs between populations (between 1 in 319 and 1 in 1000 live births are trisomic for Hsa21) (2- 6). But learning on the back of a horse has changed her ability to communicate with the world. Down syndrome results from a copy of chromosome 21 in humans. Mar 4, 2019 · According to the National Down Syndrome Society, “Down syndrome (also known as trisomy 21) occurs when an individual has a full or partial extra copy of chromosome 21. Bigger felines have also fallen prey to viral clickbait writers. And in case you’ve ever wondered: no, dogs can’t have Down syndrome. These animals are affectionate and devoted to their family members. homemade tannerite In the case of monkeys, this condition is called Trisomy 22. Not only does it provide an animal with a better life, but it also has many benefits for th. These can cause signs like stunted growth, poor brain development, or reduced cognitive function. Because of their tolerance to aneuploidy, plants provide a powerful system for a genome-wide investigation of aneuploid syndromes, an approach that is not feasible in animal systems. Down syndrome can also cause a wide nose bridge, small ears, and slanted eyes. Many of these conditions are now treatable, so most people with Down syndrome lead healthy lives. Recent genetic enhancements in the development of DS models, including the new TcHSA21rat model (Kazuki et al. Thus, the abnormality on chromosome 21 in an animal would not necessarily produce the same symptoms as Down syndrome in human beings. There are a lot of different animals that can have down syndrome. Cats can’t experience this for one simple reason: They only have 19 pairs of chromosomes. Researchers say the finding, published Wednesday in the journal Nature, is the oldest confirmed case of Down syndrome. So, pets with abnormal facial features and a shorter lifespan are often considered the victims of Down syndrome. The truth is, animals can have conditions similar to Down syndrome, but it is not exactly the same as in humans. Information about Batten's Syndrome Try our Sym. For many years, chromosome studies mainly addressed the livestock species, while recently, increasing interest in such analysis in companion animals is observed Let us know your favorite down syndrome animal in the comments! Due to shortage of pet white cubs some selfish inbreeders from Arkansas made a quick buck by inbreeding white tigers. It is commonly found in humans, occurring in approximately 1 in 700 births. This suggests that the genetic mutations that cause Down syndrome can occur in a wide range. Jun 28, 2024 · Down syndrome is caused when a human has an extra 21 st chromosome. They don't have chromosome 21. Nevertheless, this information doesn't imply or infer that canines can't have other genetic abnormalities or. entera bio Untold numbers of stories about animals with Down syndrome have made their way around the internet, thanks to Facebook, Instagram, Twitter, and YouTube, where short "documentaries" chronicle these animals' difficult lives. There are a lot of different animals that can have down syndrome. However, you may wonder are there animals with down syndrome? The internet seems to think there are, as a quick search will show you some animals that have become famous for their Down syndrome-like features. People with Down Syndrome usually have mental disability and distinct facial features, including slanted eyes, a relatively flat nasal bridge and a slightly protruding tongue. For example, humans have 23 pairs, while dogs have 39 and cats. It is important for us as veterinarians to advocate for the well-being of these animals and provide them with the necessary resources – Veterinary Geneticist Animals can have chromosomal abnormalities, but these are not the same as human Down Syndrome. Mosaicism is the least common form of Down syndrome and accounts for only about 2% of all cases of Down syndrome (Facts about Down syndrome, 2021). Creating professional animation videos can be a great way to engage your audience and bring your ideas to life. Trisomy 22 in monkeys is very similar to Trisomy 21 in humans, which is the cause of Down Syndrome in humans. Here, we provide an overview of research in the last 15 years dedicated to the development and application of rodent models for Down syndrome Estrogen restores cognition and cholinergic phenotype in an animal model of Down syndrome Behav Down syndrome giraffes, scientifically known as Trisomy 21 Syndrome Giraffa camelopardalis ,are a rare and unique occurrence in the animal kingdom. It is a genetic condition caused by the presence of an extra. Animal models of Down syndrome (DS) provide an essential resource for understanding genetic, cellular, and molecular contributions to traits associated with trisomy 21 (Ts21). We are […] Also called Neural Crest Disorder, Waardenburg Syndrome is a genetic disorder that runs on a spectrum. Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. Many people believe that animals can indeed have a form of Down syndrome, although it may not be exactly the same as the condition seen in humans. CHOPS syndrome is a disorder involving multiple abnormalities that are present from birth (congenital). It is possible to tell if your dog has down syndrome although signs and symptoms are not immediately noticeable in some cases. Down syndrome is a genetic disorder caused by having an extra copy of chromosome 21. HIV (human immunodeficiency virus) and AIDS (acq. This is one of the markers for Down syndrome that can be detected in an ultrasound. obituaries jones The most common symptom of Down syndrome in cats is abnormal facial features, such as a flat face and slanted eyes. This is the condition of Down syndrome. Aliya McCullough, Fetch by The Dodo’s on-staff veterinarian, tells The Dig. It's the extra chromosome that can cause certain physical characteristics (such as short stature and an upward slant to the eyes) and speech and developmental delays. They can also be highly intelligent, which makes them excellent companions. All animals can develop chromosomal defects, including dogs. Batten's Syndromeor Spielmeyer-Vogt syndrome is a fatal, inherited disorder. Lab tests can show if you have it. Your chance of having a baby with Down's syndrome increases as you get older, but anyone can have a baby with Down's syndrome. No animals actually have Down Syndrome; it's genetically impossible since the disorder is isolated in homo sapiens and our genetic code. Adopting an animal from a rescue is a great way to give a pet a second chance at life. While the condition may not be inherited, cats can be born with Down Syndrome-like symptoms Many people assume that all animals have Down syndrome, but this is not true. However, there are potentially subject to chromosomal disorders which can have similar physical and behavioral consequences in the animal. Dog with Down syndrome may be possible, but not entirely sure of it. Jul 8, 2023 · These animals are affectionate and devoted to their family members.
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But these conditions also have distinct differences that can help practitioners evaluate and diagnose suspect cases. Abstract. Down Syndrome is most commonly associated with humans, but it can also occur in other animals, including ferrets. There has been a longstanding belief that animals, including cats, can have Down Syndrome, a genetic disorder caused by the presence of an extra copy of chromosome 21 in humans. This soft marker has a higher correlation to Down syndrome than any other. Beckwith-Wiedemann Syndrome is an overgrowth syndrome. The occurrence of Down syndrome in cats is estimated to be approximately 1 in every 10,000 births (Smith et al Down syndrome is caused when a human has an extra 21 st chromosome. Using EGFP as a marker for trisomic cells, flow cytometry analyses of peripheral blood cells from 361 adult TcHSA21rat animals show that 81% of animals retain HSA21 in >80% of cells, the criterion for a "Down syndrome karyotype" in people. Ultimately, dogs cannot develop Down Syndrome because it is a human-specific genetic disorder. In today’s digital age, there are plenty of online animation tools that can help. Down syndrome is found more in human beings than animals. Dogs with Down syndrome may have dry and warm noses, deformed and undeveloped legs, shedding, and hair loss The truth is pet animals can’t have Down syndrome. If you’re plagued by irritable bowel syndrome, you’ll likely be experiencing some uncomfortable symptoms. According to this syndrome, one of the chromosomes is extra. 40+ beautiful animals that have Down syndrome but don't from wwwcom. In humans, the condition is most commonly the result of an extra copy of Chromosome 21. Animal models of Down syndrome (DS) provide an essential resource for understanding genetic, cellular, and molecular contributions to traits associated with trisomy 21 (Ts21). Sep 15, 2022 · While Down syndrome, a genetic condition in which one is born with an extra copy of a chromosome, can't affect dogs, other rare conditions do, Dr. Before discussing whether or not dogs can have Down Syndrome, it is important to have a clear understanding of what Down Syndrome is. Having said that, birds can certainly display signs and symptoms that are similar to those found in humans with Down Syndrome. This can manifest as slower cognitive and physical development compared to their counterparts. "The genetic testing offered at 12 weeks also tests for Edwards' syndrome and Patau's Sydrome - conditions in which many children don't live past their first birthday. These animals were diagnosed with a disease similar. oh really gif “While it is still a topic of debate within the scientific community, there is evidence to suggest that animals can exhibit characteristics similar to Down syndrome. There have also been reviews that have compared the fatality rate of this pandemic with prior pandemics, such as MERS-CoV. For example, a dog with Down syndrome may have gotten it from too much inbreeding. Trisomy 22 in monkeys is very similar to Trisomy 21 in humans, which is the cause of Down Syndrome in humans. This happens, for example, in laboratory mice that have trisomy on chromosome 16. Causes of Genetic Disorders. Monkeys, like humans, can have Down Syndrome-like conditions caused by an extra copy of a specific chromosome. In dogs, sundowners syndrome is part of canine cognitive dysfunction syndrome (CDS), which can also be called doggie dementia. It's like how some kids might need extra support or have unique features, animals with Down syndrome might also look or act a bit differently. It's thought that the extra toes are helpful with the snow and uneven ground. First of all, people are equipped with 23 pairs of chromosomes while their canine counterparts have a total of 39. Down Syndrome is a genetic condition that occurs in humans when there is an extra copy of chromosome 21, leading to a number of distinctive characteristics and associated health problems. Down syndrome (DS) (trisomy 21) is a major cause of mental retardation and affects every major organ system in the body. ue4 simple move to actor Recent genetic enhancements in the development of DS models, including the new TcHSA21rat model (Kazuki et al. In turn, apes have 24 pairs of chromosomes, for a total of 48. But several commentators noted that although the results are encouraging, safety concerns with lithium need to be addressed before applying to human trials of Down syndrome. Down Syndrome is a congenital condition that occurs when an additional full or partial copy of chromosome 21. Rett syndrome is a very rare genetic condition. With increased awareness, research, and advocacy, animals with Down Syndrome can lead happy and fulfilling lives. In the case of monkeys, this condition is called Trisomy 22. Down Syndrome, or trisomy 21, is a genetic disorder caused by the presence of an extra copy of chromosome 21. In dogs, sundowners syndrome is part of canine cognitive dysfunction syndrome (CDS), which can also be called doggie dementia. Former President Donald Trump picked J Vance to be his running mate, catapulting the Ohio senator even more into the national spotlight. Are There Animals Having Down Syndrome? Is Down syndrome a condition in humans? Or are there other animals with this disorder? Is it possible that we have genetically altered mice? This article addresses these questions. They suffer from chromosomal abnormality and irregularities which is why there are genetic problems in the development of some animals. They can also be highly intelligent, which makes them excellent companions. It is caused by an extra copy of chromosome 21, and it can occur in any species that has this chromosome. Internet buzz notwithstanding, cats don't develop Down syndrome. In fact, they can't. While it is rare for animals to have Down syndrome, it has been documented in a variety of species including dogs, cats, and even dolphins. Through expert insights and veterinary science, we aim to. The only non-lethal full monosomy occurring in humans is the one causing Turner's syndrome. Moreover, the analysis of sex chromosomes is crucial for a proper classification of disorders of sex development (DSD). While Down syndrome is specific to humans, there are certain genetic conditions that can affect animals, including squirrels. nail piercing Cushing's syndrome is a hormo. Piggies have a chromosomal arrangement different from ours. They can also be highly intelligent, which makes them excellent companions. Cushing's syndrome is a hormo. HIV and AIDS are two distinct diseases that can affect humans of all ages. However, cats do not possess this specific chromosome, making it impossible for them to have Down Syndrome. To date, a wide range of mouse models has been developed to determine. Whether you're a marine biology student or simply interested in learning more about marine life, this post provides insightful information on this intriguing topic. While Down syndrome, a genetic condition in which one is born with an extra copy of a chromosome, can't affect dogs, other rare conditions do, Dr. The only non-lethal full monosomy occurring in humans is the one causing Turner's syndrome. However, cats do not possess this specific chromosome, making it impossible for them to have Down Syndrome. We examine the scientific basis of Down Syndrome, its applicability to cats, and how certain symptoms in felines might be mistakenly associated with this human chromosomal condition. Jan 9, 2020 · Down syndrome is a genetic disorder that causes a combination of physical and mental symptoms. It is caused by an extra copy of chromosome 21, and it can occur in any species that has this chromosome.
I think animals can have Down Syndrome. Yes, cows can also have down syndrome! But even if they have this health condition, these animals can still be funny and adorable as they always are. There have also been reviews that have compared the fatality rate of this pandemic with prior pandemics, such as MERS-CoV. 1 Downer cow syndrome is a common problem in dairy cattle. It is possible to tell if your dog has down syndrome although signs and symptoms are not immediately noticeable in some cases. Discover 10 remarkable animals with Down syndrome, exhibiting unique characteristics and capturing the beauty of diversity. This causes physical and mental disabilities and developmental delays. mudevista memorizing books read once), photographic memory for. Each case is unique and showcases the diversity of Down syndrome across different species. In fact, 80 percent of the animals that live in Australia only can be found there, aCC0rding to Kids Wor. Animals can certainly be mentally retarded, have chromosomal abnormalities, or miscellaneous "brain issues". Looking for Animals with Down Syndrome? We have the total list of top 10 Animals with Down Syndrome. Yes, cats can have Down syndrome, but it is a very rare condition. Animals, like humans, can also have Down syndrome. el paso dwi mugshots However, they may have similar disorders. While dogs can have genetic conditions, those involving extra chromosomes are less viable, and affected dogs may not survive. Aliya McCullough, Fetch by The Dodo's on-staff veterinarian, tells The Dig. Besides dogs, a number of other animals can have Down syndrome, including cats and kittens. While it is rare for animals to have Down syndrome, it has been documented in a variety of species including dogs, cats, and even dolphins. This is one of the markers for Down syndrome that can be detected in an ultrasound. huntington bank auto loan customer service While there are genetic abnormalities that dogs can suffer from, there is none. Below are the laws and a list of mental, emotional, and physical disabilities that may qualify you for a service dog. There are several claims on the internet that certain animals, like giraffes, have Down syndrome characteristics. Down's syndrome cat may also sit differently than other cats, or have different vocalizations. However, cats do not possess this specific chromosome, making it impossible for them to have Down Syndrome. The misconception of pets having Down syndrome occurred due to similar symptoms that humans suffer from during this disease.
While dogs can have genetic conditions, those involving extra chromosomes are less viable, and affected dogs may not survive. However, cats can suffer from genetic disorders that appear to resemble Down syndrome. Australia is home to some of the world’s most beautiful and unique animals. Down Syndrome is a congenital condition that occurs when an additional full or partial copy of chromosome 21. While Down syndrome, a genetic condition in which one is born with an extra copy of a chromosome, can't affect dogs, other rare conditions do, Dr. They may have special medical problems of the heart, stomach, eyes, and other parts of the body. The internet of animals with down syndrome is it a fact or fiction? Click on the link down below to find out. The wide nose and deep-set eyes are pretty telltale of a chromosomal issue. Dogs can't have Down's syndrome as they have a different number of chromosomes compared to people. Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. However, for most pets, it's an autosomal recessive genetic mutation Trisomy. According to this syndrome, one of the chromosomes is extra. Challenges and Care for Animals with Down Syndrome. Jan 9, 2020 · Down syndrome is a genetic disorder that causes a combination of physical and mental symptoms. Always treat others how you want to be treated. Some animals have the same physical problems as a human. my hero academia watch death battle fanfiction Nabila says there were several dozen soldiers with a combat dog - animals used to find Hamas fighters, and. Whether you're a marine biology student or simply interested in learning more about marine life, this post provides insightful information on this intriguing topic. They can also have a flattened face, abnormal ears, and eyes that slant upwards. It is a very important and common cause of neurologic disability in large breed dogs. We report a case of chimpanzee trisomy 22 in a captive-born female. The first step in creating online animations is selecting the right an. But it does suggest that studying monkeys may help us understand what's going on in the brains of people with autism and identify the causes of the condition. Warning signs: 9 dog illness symptoms and what they mean. Animals, like humans, can also have Down syndrome. Aliya McCullough, Fetch's on-staff veterinarian, tells The Dig. This 24-year-old female chimpanzee, residing at the Kumamoto Sanctuary in Japan, has garnered scientific attention due to her unique genetic condition, Down syndrome (trisomy 21). Down syndrome is a congenital disorder in humans, affecting the people that have it both physically and intellectually. For example, a dog with Down syndrome may have gotten it from too much inbreeding. We will also explore the evidence of Down Syndrome in animals, including the ethical considerations and treatment options for animals with Down Syndrome. This 24-year-old female chimpanzee, residing at the Kumamoto Sanctuary in Japan, has garnered scientific attention due to her unique genetic condition, Down syndrome (trisomy 21). Noonan syndrome is a disease present from birth (congenital) that causes many parts of the body to develop abnormally. Jan 23, 2024 · Conclusion. you are given a string representing a sequence of n arrows It should give you a more specific idea of what you'd like to do, if you end up deciding you do want to work in the field. Cats and dogs can have Down syndrome too. Related Topics Meme Internet Culture and Memes comments sorted by Best Top New Controversial Q&A Add a Comment. Nov 16, 2022 · As we have discussed, there are conditions in animals that can cause similar symptoms and characteristics as down syndrome. When such myths are perpetuated, they can lead to misguided sympathies and misinformed animal care practices. Down Syndrome is a genetic condition that occurs in humans when there is an extra copy of chromosome 21, leading to a number of distinctive characteristics and associated health problems. This imbalance in the body and the extra genetic material changes the development time and way. 1%, which is 13 times lower than COVID-19. According to Minerva Medica, floating rib syndrome is a condition characterized by a deep, continuous pain in the bottom of the chest and top of the abdomen. Down syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of an extra copy of chromosome 21. There are, however, genetic mutations that can cause traits similar to those found in people with Down syndrome. Down Syndrome, or trisomy 21, is a genetic disorder caused by the presence of an extra copy of chromosome 21. Animals Can Have Spine Conditions Too: Dogs with Short Spine Syndrome : Saratoga Spine. TcHSA21rat exhibits learning and memory deficits and shows increased anxiety and hyperactivity. Down syndrome is a congenital disorder in humans, affecting the people that have it both physically and intellectually. [ 18226 : Sternbach H ] Also known as serotonin. For example, Down syndrome is such a disorder that occurs in humans and it can also happen in other species such as dogs or cats.