Answer:
3 can you think of other examples of toxic substances not listed in the gizmo from science 101 at Stephen decatur high
Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over, the chromatids held together by the centromere are no longer identical.
I just found this on google
They represent the parent's genotypes.
