- Question 7 (1 point) Biochemical evidence for evolution is based on the concept that: all organisms share identical DNA molecules and identical proteins the more similar the DNA, the more closely two species are related present and extinct organisms share identical gene pools the more similar the DNA, the more distantly two species are related
- Modern, aquatic toothed whales evolved from a terrestrial ancestor Present day whales are best linked to their terrestrial ancestors by: analogous structures embryological evidence transitional fossils biogeography
- After cutting off the tails of mice for 20 generations, an experimenter found that the 21st generation was still born with tails This tends to disprove the theory of: natural selection survival of the fittest mutations inheritance of acquired characteristics
- Random changes in DNA may provide new genes in a population's gene pool. What determines whether a mutation is beneficial? the amount of DNA changed a survival advantage of the mutation a survival and/or reproductive advantage of the mutation ) the cause of the mutation
- Charles Darwin was unable to explain the source of the variations he claimed were necessary for evolution This was because: such variations did not exist. variations result from magic, which he had not studied. genes had not been discovered during his lifetime. variations occur in nature and have no explanation.
