What role does the centromere play in cellular reproduction? It is the area where the nucleus is during cell division.
It is the area of alignment for the chromosomes.
It is the area of attachment for chromatids.
It is the area where microtubules are formed.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

explanation:

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time