5. A study of the position and shape of the bones in the forelimbs of a flying squirrel, a bat, and a beaver showed that the beaver and the flying squirrel appear to be most closely related. This determination was most likely based on a study in the field of comparative (1.) anatomy (2.) biochemistry (3.) embryology (4.) cytology 6. Fossils would most likely be found in (1.) amber that is over 8 billion years old (2.) icebergs that are 500 billion years old (3.) sedimentary rocks that are 500 million years old (4.) volcanic rocks that are 50 million years old 7. The diagram below shows undisturbed sedimentary strata at the bottom of an ocean. The fossils found in layer B resemble the fossils found in layer A. This similarity suggests that (1.) the fossils in layer B were formed before the fossils in layer A (2.) modern forms of life may have evolved from earlier forms of life (3.) vertebrate fossils are only found in sediments (4.) the fossils in layer A must be more complex than those in layer B 8. According to Darwin's theory of evolution, differences between species may be the result of (1.) the disuse of body structures (2.) the transmission of acquired characteristics (3.) natural selection (4.) mutagenic agents 9. Two nucleotide sequences found in two different species are almost exactly the same. This suggests that these species (1.) are evolving into the same species (2.) contain identical DNA (3.) may have similar evolutionary histories (4.) have the same number of mutations 10. According to Charles Darwin, one factor that affects the evolution of a species is (1.) variation due to genetic mutations (2.) rapid fossil formation (3.) survival of the fittest (4.) exposure to environmental pollutants
5. A study of the position and shape of the bones in the forelimbs of a flying squirrel, a bat, and a beaver showed that the beaver and the flying squirrel appear to be most closely related. This determination was most likely based on a study in the field of comparative (1.) anatomy (2.) biochemistry (3.) embryology (4.) cytology 6. Fossils would most likely be found in (1.) amber that is over 8 billion years old (2.) icebergs that are 500 billion years old (3.) sedimentary rocks that are 500 million years old (4.) volcanic rocks that are 50 million years old 7. The diagram below shows undisturbed sedimentary strata at the bottom of an ocean. The fossils found in layer B resemble the fossils found in layer A. This similarity suggests that (1.) the fossils in layer B were formed before the fossils in layer A (2.) modern forms of life may have evolved from earlier forms of life (3.) vertebrate fossils are only found in sediments (4.) the fossils in layer A must be more complex than those in layer B 8. According to Darwin's theory of evolution, differences between species may be the result of (1.) the disuse of body structures (2.) the transmission of acquired characteristics (3.) natural selection (4.) mutagenic agents 9. Two nucleotide sequences found in two different species are almost exactly the same. This suggests that these species (1.) are evolving into the same species (2.) contain identical DNA (3.) may have similar evolutionary histories (4.) have the same number of mutations 10. According to Charles Darwin, one factor that affects the evolution of a species is (1.) variation due to genetic mutations (2.) rapid fossil formation (3.) survival of the fittest (4.) exposure to environmental pollutants