Answer:
It maintains genetic variability in a species.
Explanation:
It would most likely be A. 10grams considering grams is the smallest and we are talking about a feather.
Chromosomes are the homologous chromosomes that cross over
The series of events that take place in a cell<span> leading to its division and duplication (replication) that produces two daughter cells. </span>
The kilometer is the independent, since it stays the same, and the increasing his exercise time is the dependent since that’s what’s changing