Answer: C) Centromeres
Explanation: Centromeres are involved in crossing over, none of the other ones are.
One allele can only produce one trait
Explanation:
it helps to maintain the shape of the cell
D. Because of the columbian exchange, more food was produced and different variety of food and nutrients were introduced into the world's diet
Answer: A
Explanation:
The cell for trial 2 with a lot of water. Trust me