Is a starfish an arthropod ? science is so hard!

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.

Some substances but not other can cross the (blank) membrane of a cell

Por qué crees que los huevos con cáscara se llaman amnióticos?