Question

In human trisomy of chromosome number 21 is responsible for?

Answer 1

Answer:

If this egg or sperm is fertilized, then the baby will have three copies of the #21 chromosome, which is called trisomy 21, or Down syndrome. The features of Down syndrome are caused by that extra copy of chromosome #21 being in every cell in the body. Most cases of Down syndrome are caused by trisomy 21.

Answer 2

Answer:

21 chromosome is smallest chromosome containing 48 million base pairs.

in trisomy, each cell contains 3 copies of 21st chromosome instead of 2.

This chromosome is responsible for maintenance of our vital and most senceble organs like eyes, nose, tounge, etc..