The answer is 4. Hope this helps
If you didn't know already, trisomy 21 is also known as Down Syndrome. It is caused by error in the cell division which is called nondisjunction. It leaves a sperm or egg cell with an extra copy of chromosome 21 before or after conception.
I think it’s E (microtubules) i can be wrong but hopefully this helped
The answer is D Hypothalamus I think
MRSA is a kind of staph that can't be killed by antibiotics.
