7. Humans still have appendix though it serves no known function. This is an exa

Question

7. Humans still have appendix though it serves no known function. This is an example of A. Developmental abnormality B. God's design beyond humans' ability to understand C. A Trojan horse device placed by aliens D. Vestigial traits E. Atavism Which of the following statements about the reactions of the scientific community to Charles Darwin's publication of On the Origin of Species is incorrect? A. Both the reality of evolution and the theory of natural selection were immediately 8. accepted by the scientific community. B. Richard Owen accused Charles Darwin of stealing the idea of evolution from him. C. Thomas Huxley defended Charles Darwin on the reality of evolution but disagreed with him on natural selection as the mechanism. D. Ernst Haeckel in Germany supported Charles Darwin's argument for the reality of evolution, but not his theory of natural selection. E. By 1870s the natural selection theory had fallen out of favor in scientific community Which of the following is not a major tenet of the Modern Synthesis in 1930s-1950s? A. Evolution occurs as allele frequency changes within a population. B. Natural selection is the major mechanism for evolution, with genetic drift playing a 9. C. Mutations of major effects could create new species or higher level of taxa even within D. All forms of life on earth have originated from a single common ancestor in the E. The evolutionary changes at higher taxonomic level, like between different phyla of secondary role. one generation. remote past. animals, evolved gradually through the same mechanism as those operating within a species. 10. Which of the following statements about the relationship between embryology and organism (particularly evolution is not true? A. Generally speaking, the development of an individual B. The development of a highly evolved animal species passed through all the adult C. General characteristics common to a group of animals develop earlier in embryonic D. Characteristics specific to individual species within a group develop later than those E. Von Baer's laws are closer to the truth than Haeckel's "biogenetic law" in describing vertebrate animals) replays its evolutionary history forms of its ancestors in order. development. shared characteristics of the group. the relationship between ontogeny and phylogeny

Explanation / Answer

7. Option D is correct.
A vestigial organ serves no function in an adult organism. It's presence in an organism is an evidence of its evolutionary history.

8. Option A is correct.
Many scientists did not accept the theory of natural selection until the 20th century.

9. Option D is correct.
According to the modern synthesis, it requires sufficient time duration (more than one generation) and reproductive isolation for a species to diversify.

10. Option B is correct.
According to Von Baer laws, a highly evolved species exhibits only the embryonic forms of its ancestors but not their adult forms.

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