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Bio 130 – Quiz April 4. Q. 1 – T.H. Morgan and his colleagues worked out a set of symbols to represent fly genotypes. Which of the following are representative?

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Presentation on theme: "Bio 130 – Quiz April 4. Q. 1 – T.H. Morgan and his colleagues worked out a set of symbols to represent fly genotypes. Which of the following are representative?"— Presentation transcript:

1 Bio 130 – Quiz April 4

2 Q. 1 – T.H. Morgan and his colleagues worked out a set of symbols to represent fly genotypes. Which of the following are representative? A. AaBb × AaBb B. 46, XY or 46, XX C. vg+vgse+se × vgvgsese D. +2 × +3 E. I A I B × I A I A

3 Q. 2 - In some Drosophila species there are genes on the Y chromosome that do not occur on the X chromosome. Imagine that a mutation of one gene on the Y chromosome reduces the size by half of individuals with the mutation. Which of the following statements is accurate with regard to this situation? A.This mutation occurs in all offspring of a male with the mutation. B.This mutation occurs in all male but no female offspring of a male with the mutation. C.This mutation occurs in all offspring of a female with the mutation. D.This mutation occurs in all male but no female offspring of a female with the mutation. E.This mutation occurs in all offspring of both males and females with the mutation.

4 Q. 3 - In cocker spaniels solid coat color is dominant over spotted coat color. If two heterozygous dogs were crossed to each other, what would be the probability of having a litter of 3 pups, 2 with solid coats and one with a spotted coat? A.¾ B.3/8 C.9/16 D.9/32 E.9/64

5 Q. 4 – Two human parents with normal skin pigmentation have an albino child. What is the probability that their next child will be an albino too? A.½ B.¼ C.1/8 D.1/16 E.1


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