A. Patient is male because there is a Y chromosome
B. 47 chromosomes
C. Down syndrome or trisomy 21
Answer:
a control
Explanation:
you need something to compare it to to see if anything happens
The answer is D. Hope this helps!
This is the Prophase.
<span>1) The chromosomes coil up and become visible while the nuclear envelope disappears.
2) Sister chromatids are appears.
3) A centriole forms at each pole and spindle fibers made of microtubules grow out of it.
4) Short microtubules stick out from the centriole in a star shape known as an aster.
I don't remember liking biology but I do remember some things from it.</span>
