All cells in an embryo have the same dna. however, the embryonic cells form organs, such as the brain, and the kidneys, which have very different structures and functions. these differences are the result of

How does the study of genetic disorders such as pku biologists understand normal alleles?

One gene can influence trait(s). one trait can be determined by gene(s).

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote