Buffalo have a somatic chromosome number of 60. Hybrids produced by crossing a buffalo and grizzly bear are called gruffalo, are sterile, and have many characteristics intermediate between the two parental species. If a gruffalo has 67 chromosomes, what is the somatic chromosome number of a grizzly bear? a. 42. b. 37. c. 62. d. 74. e. 30.

Question

Biology

Dalia Wagner

31 March, 14:29

Buffalo have a somatic chromosome number of 60. Hybrids produced by crossing a buffalo and grizzly bear are called gruffalo, are sterile, and have many characteristics intermediate between the two parental species. If a gruffalo has 67 chromosomes, what is the somatic chromosome number of a grizzly bear? a. 42. b. 37. c. 62. d. 74. e. 30.

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Dalia · Answer 1

37

Explanation:

Since the Gruffalo has a somatic chromosome number of 67 and the Buffalo has a somatic chromosome number of 60, we may infer that seven chromosomes from the Grizzly were not able to pair up with the chromosomes of the Buffalo. Checking the options, the only choice that has a suitable number is b. 37 chromosomes. If this is true, then the remaining 30 chromosomes were able to pair up.