Downs syndrome occurs when an individual ends up with 3 copies of the 21st chromosome (trisomy 21). in what phase of meiosis could the mistake have occurred (there are two possibilities)? draw the nondisjunction event occurring.

A and D

Explanation:

well, i believe that the answer is 2. : 3

if, i suppose that a bee stings me swinging my hand away from a bee. then that if, i persist patient when a bee or wasp areas on your surface to investigate a scent or to take h2o and i secreting heavily, the bug ultimately will move of its personal agreement. if i don't need to set for it to disappear, lightly and gently wipe it off with a part of the paper.