answersLogoWhite

0

An individual with Down syndrome has the presence of all or part of an extra 21st chromosome.

User Avatar

Wiki User

13y ago

What else can I help you with?

Related Questions

What is the difference between a kid with Down syndrome and a kid without Down syndrome?

downs syndrome is a a chromosome abnormality in which their is an extra copy of the 21st chromosome causing the person to have a flatter face slanted eyes and a mental handicap.


How are the cells of a person with Down syndrome different from those of a person without Down syndrome?

In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.


How are the cells from a person with down syndrome different from a person without the disorder?

In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with Down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with Down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.


How are the cells of a person with down syndrome different from those of Person without the disorder?

In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.


How are cells of a person with Down syndrome different from those of a person without the disorder?

In Down syndrome, a person's cells have an extra copy of chromosome 21. In other words, instead of a pair of chromosomes, a person with Down syndrome has three of that chromosome. Down syndrome most often occurs when chromosomes fail to separate properly during meiosis. People with Down syndrome have a degree of mental retardation. Heart defects are also common, but can be treated.


What is the difference between the population and sample regression functions Is this a distinction without difference?

What is the difference between the population and sample regression functions? Is this a distinction without difference?


What is the difference between 075 and 75?

Without a decimal, there is no difference.


Why is the difference between scalars and vectors important?

Without the difference between scalars and vectors the Universe doesn't work !


What are the similarities and differences between people with Down syndrome and people without this disability?

People with down syndrome has an extra chromosome in the 21st pair. The normal amount of chromosomes is 56 single chromosomes (23 pairs). A person with down syndrome has 57 chromosomes. Therefore, they look and act more different than people without the disorder. Instead of looking like their parents, people with down syndrome look more like other people who has down syndrome.


Can you have Asperger's Syndrome when you are an adult?

Yes, you can have Asperger Syndrome when you're an adult.Asperger Syndrome is no longer a diagnosis, it has been merged with Autism - the two are the same, the only difference was that Asperger Syndrome was given to those who were Autistic but without developmental delays in childhood, not enough to be a separate diagnosis. You are born Autistic and you continue to be Autistic throughout your entire life, Autism is a difference in your brain and your brain doesn't change to that of a neurotypical person once you enter adulthood.


Which term is defined as all the genes in a person's twenty-three pairs of chromosomes?

Humans without a disorder will have 23 pairs of chromosomes. However, there are many disorders caused by different numbers of chromosomes. For example, Trisomy 21 (Down Syndrome) is a disorder caused by the presence of an extra chromosome 21.


Can you taste the difference between milk with rgbh and milk without it?

not really