Answer:

27. Which of the following differentiates a male sex chromosomes from that of a female?

A.XX

B.Y

28. If a normal male marries a carrier female, what is percentage of having color blind children?

A. 25%

B. 50%

C. 75%

D. 100%

29. A human body cell (somatic cell) consists of 23 pairs of chromosomes. If the first 22 pairs are autosomalchromosomes, what do you call the last pair of chromosomes?

A. Autosomes

B. Body chromosomes

C. Chromosomes

D. Sex chromosomes

30. What term refers to the variety of life that can be found in an area?

A. Biodiversity

B. Community

C. Population

D. Species

Explanation:

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