A species of cave beetle that lives in total darkness is bind but has remnants o

Question

A species of cave beetle that lives in total darkness is bind but has remnants of what looks like eyes. These "eyes" are vestigial homologous analogous convergent Two different species may have similar features because of genetic drift. the fossil record. artificial selection. descent from a common ancestor. The hands of a human and the hands of a chimpanzee are similar in structure because humans and chimpanzees share a recent common ancestor. evolved from chimpanzees. and chimpanzees evolved from different organisms that lived in similar environments. artificially selected for chimpanzees with hands during domestication. Which of the following statements about evolution is true? Evolution results in the addition of traits to existing organisms. Evolution only results in the loss of traits from existing organisms. Evolution can result in the addition or loss of traits in existing organisms. Evolution has nothing to do with the addition or loss of traits. Both insects and humans evolved jointed legs to allow locomotion on land. These structures are considered analogous because insects and humans stopped evolving at different times in Earth's history. evolved from different ancestors. cannot breed. faced different environmental challenges during evolutionary time. Convergent evolution occurs when natural selection causes distantly related organisms to evolve into the same species despite the fact that they are members of separate populations. merge into one continuous population because of reversals in continental drift. evolve both analogous and homologous characteristics. evolve similar structures in response to similar environmental challenges. Speciation can occur when gene flow is common between two populations. a mutation occurs in an individual. two populations are geographically isolated from each other for a long period of time. the gene pools of two of a species remain identical for five or more generations. A population of mice lives along a river. Some mice cross the river to establish a new population. Eventually, due to genetic changes, these two groups of mice can no longer interbreed. This is an example of speciation. genetic drift. artificial selection. creationism. The number of different types of organisms found on Earth is a result of continental drift. Darwin's theories. speciation. common descent.

Explanation / Answer

47. a; organs that cease to be functional are called vestigeal

48. d

49. a

50. d; Evolution can not add or delete traits to an existing individual. It merely favors their progeny with such changes who are better suited to new environments

51. b

52. d

53. c

54. a

55. c

(Where appropriate, explanations have been added; for the rest of the questions, explanations were not possible)

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