Question

What happens to most embryos with extra chromosomes? Explain your answer.

Answer 1

Most fetuses with trisomy are miscarried during the first trimester. Most of those who survive have Down syndrome, also known as trisomy 21 because it's caused by an extra chromosome 21.

Answer 2

an extra copy of chromosome 21 causes Down syndrome (trisomy 21).

Step-by-step explanation:

Chromosomal abnormalities can also cause miscarriage, disease, or problems in growth or development. - hope this helped <3