Class Reptilia and Class Amphibia share many traits, but reptiles are able to inhabit many areas that amphibians cannot. Which of the following reptile traits is most responsible for this ability? A) four limbs B) internal bones C) teeth D) the amniotic egg E)lungs

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.