1. Blood proteins in horses are chemically similar to blood proteins in monkeys. This similarity suggests that horses and monkeys can interbreed evolved at the same time live in the same habitat have a common ancestor
3. Fossils of an extinct species of giant armadillo were found to be similar to a smaller species of armadillo presently inhabiting the same region. This similarity could best be explained on the basis of evolution from older forms use and disuse inheritance of acquired characteristics the heterotroph hypothesis
4. 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 anatomy biochemistry embryology cytology
5. Fossils would most likely be found in amber that is over 8 billion years old icebergs that are 500 billion years old sedimentary rocks that are 500 million years old volcanic rocks that are 50 million years old
7. According to Darwin's theory of evolution, differences between species may be the result of the disuse of body structures the transmission of acquired characteristics natural selection mutagenic agents
8. Two nucleotide sequences found in two different species are almost exactly the same. This suggests that these species are evolving into the same species contain identical DNA may have similar evolutionary histories have the same number of mutations
9. According to Charles Darwin, one factor that affects the evolution of a species is variation due to genetic mutations rapid fossil formation survival of the fittest exposure to environmental pollutants
11. Which statement best describes evolution? Evolution is a predictable change from simple to complex organisms. Evolution is a process of change through time. Evolution often proceeds from complex to simpler organisms. Evolution causes organisms to develop characteristics they need.
12. Studies of finches on the Galapagos Islands suggest that the finches' differences in beak structure were most directly due to acquired characteristics in the parent finches the size of the island where the finches live mating behaviors of the different finch species adaptations of the finches to different environments
13. Biologically similar organisms have similar DNA and proteins. This statement supports the concept of diversity in species acquired characteristics use and disuse evolution
14. The embryos of fish, chickens, and pigs have gill slits and a tail. The presence of these features suggests that all these animals can swim these animals may have had a common ancestor gill slits and tails are required for embryonic development pigs developed from chickens
15. Characteristics of a species that make its members better able to live and reproduce in their environment are known as abiotic factors biotic factors favorable adaptations homologous structures
16. In his theory of evolution, Charles Darwin was not able to explain competition overproduction reproduction variation
17. Charles Darwin proposed that organisms produce many more offspring than can possible survive on the limited amount of resources available to them. According to Darwin, the offspring that are most likely to survive are those that are born first and grow fastest are largest and most aggressive have no natural predators are best adapted to the environment
18. One concept that supports the theory of evolution states that organisms best adapted for survival are the ones that will reproduce and pass traits on to future generations. Adaptations that can be passed on do not include the basic structure of the organism the reflex actions of the organism the manner in which the organism carries out respiration techniques for hunting food taught by the parents of the organism
19. Many biologists believe that the great number of different species of organisms which exist on the planet and the present time has resulted from billions of years of gel electrophoresis recombinant DNA cloning evolution
20. What is the most probable reason that fossils found in lower layers of undisturbed rock are not found in upper layers of undisturbed rock in the same rock sequence? The development of many different organisms is part of an evolutionary process which has occurred for billions of years. Fossils of early organisms are much more complex than those of later organisms. Organisms living today show no relationship to organisms living billions of years ago. Changing environments on the earth have resulted in the extinction of many organisms.
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