Name: ID: A 44. Adaptive evolution a. is large-scale movement of a single specie

Question

Name: ID: A 44. Adaptive evolution a. is large-scale movement of a single species over a new geographic area. b. occurs when a more adapted species causes the extinction of a less adapted one. c is the process by which natural selection improves the match between an organism and its envirooment over time. d. is an increase in the adaptiveness of many species that have already evolved. 45. Grizzly bears, whales, mice, and bumans are very differeat genotypically and phenotypically. However, they do share some genotypic and phenotypic traits because they a. independently evolved the similar traits, even though they are not related to each other. b. evolved from species that radiated from a common ancestral species millions of years ago. c. occupy the same ecological niche wbere similar traits are selected d. are not reproductively isolated from each other. 46. In the following illustration of adaptive radiation of mammals, which is the ancestral species? Adaptive Radlation in Mammels a. Grizzly bear c. Woolly mammoth d. Morganucodon

Explanation / Answer

44. Adaptive evolution is the process by which natural selection improves the match between an organism and its environment over time.

45. Grizzly bears, whales, mice and humans are very different genotypically and phenotypically. However, they do share some genotypic and phenotypic traits because they evolved from species from that radiated from a common ancestral species millions of years ago.

46. From the illustration we can say that the ancestral species is Morganucodon.

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