What difference did darwin notice among the finches

Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

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.