A (non-gemete) cell from a woman with down syndrom contains?

Question

a (non-gemete) cell form a wonam with down syndrom contains

a)47 autosomes and 2 X chromosomes

b)47 autosomes and 1 X chromosome

c)46 autosomes and 2 X chromosomes

d)46 autosomes and 1 X chromosome

e)45 autosomes and 2 X chromosomes

Answer 1

E. 45 autosomes and 2 X chromosomes

Normal non-gamete (i.e. diploid) cell contains 22 pairs (i.e. 44) of autosomes and one pair (i.e. 2) of s*x chromosomes. Down's syndrome is Trisomy 21. In other words, there are 3 instead of 2 copies of chromosome # 21.

Answer 2

answer is e