Study the comic strip above about giraffes. Answer BOTH questions: Hint: Look at the necks of the two set of giraffes 1. What trait increased in frequency over time?

2. What selection pressures are in this environment that caused that trait to increase?

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.