The embryonic development of animals suggests an evolutionary relationship between humans and other vertebrates. Based on the
similarities of embryological development, it can be inferred that some
animals are more closely related to humans than others. Which shows
the relationships in order of closeness to humans in ascending order
(from least closely related to most closely related)?

your answer should be c) enjoy!

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.