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There are three different types of Down syndrome: Standard Trisomy 21, Translocation, and Mosaicism. Standard Trisomy 21 is when the extra chromosome 21 comes from either the egg or sperm cell. Between 90% and 95% of all Down syndrome is Standard Trisomy 21.

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Norma Lockman

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Are there different types of Down syndrome?

There are three different types of Down syndrome: Standard Trisomy 21, Translocation, and Mosaicism. Standard Trisomy 21 is when the extra chromosome 21 comes from either the egg or sperm cell. Between 90% and 95% of all Down syndrome is Standard Trisomy 21.


What are the different types of Down syndrome?

There are three different types of Down syndrome: Standard Trisomy 21, Translocation, and Mosaicism. Standard Trisomy 21 is when the extra chromosome 21 comes from either the egg or sperm cell. Between 90% and 95% of all Down syndrome is Standard Trisomy 21.


What is the genetic disorder for having three 21 chromosomes?

down syndrome


What is a chromosomal disorder that could result from nondisjunction?

Disorders, such as Down's Syndrome, are caused by nondisjunction.


What is the correct spelling 'Down syndrome' or 'Down's syndrome'?

Down syndrome is generally the preferred spelling, although Down's syndrome is sometimes used in American sources.


Is down's syndrome inherited?

Most cases of down syndrome are not inherited. Translocation Down syndrome can be inherited.


What are diagnosis for down syndrome?

Down syndrome IS the diagnosis.


Where is down syndrome on your body?

Down Syndrome Is In Your Brain.


How preventable is down syndrome in the community?

how is down syndrome preventable?


Can be cured form down syndrome?

No, Down Syndrome is permanent.


What is the correct spelling - 'Down syndrome' or 'Down's syndrome'?

Down syndromeBoth spellings are correct and acceptable. And "syndrome" is sometimes uppercase and sometimes lowercase. On Answers.com, we choose the spelling "Down syndrome."


Can a girl with down syndrome have a boyfriend?

Yes, a girl with Down syndrome can have a boyfriend, and many do. People with Down syndrome have the same relationship needs as people without Down syndrome.