Crossing over. Parts of sister chromatids will sometimes switch places with the parallel part, resulting in a completely unique DNA sequence.
Answer:
Fermentation
Explanation:
they are basically the same process, but slightly different in some ways
Answer :
B.) they orbit the sun
Answer:
I think it's chromosome.
Explanation:
A chromosome looks roughly like an X, but it does not maintain it's form. IT floats around and stuff. That's why I think it's chromosome.