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Anonymous
Anonymous asked in Science & MathematicsBiology · 3 months ago

An animal population is of 50% individuals of AA genotype and 50 of aa genotype. If random mating occurs it is expected that...?

a. the next gen will contain an equal percentage of AA, Aa, and aa genotypes

b.the next generation will contain 100 percent Aa individuals

c. the next generation will contain 25% AA, 50 percent Aa, and 25 percent aa

d. the next generation will be 50 percent AA and 50 percent aa 

3 Answers

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  • Zirp
    Lv 7
    3 months ago
    Favorite Answer

    Jazsinc is utterly correct. Oikoo would be correct if the question was phrased as: two equal sized populations, one 100% AA and the other 100% aa, are released in an environment where the species was absent until now. If random mating occurs it is expected that...

    • oikoσ
      Lv 7
      2 months agoReport

      Isn't that stipulated in the question?

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  • 3 months ago

    d. the next generation will be 50 percent AA and 50 percent aa

    Why:  Look at your given population, which is 50% AA, 0% Aa, and 50% aa.  For that to have happened, the Aa genotype must be totally lethal or totally culled.  I would expect the same thing to happen to the next generation.

    Your teacher should not have asked you this question with this wording.

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  • oikoσ
    Lv 7
    3 months ago

    c, of course. If this flummoxed you, you need to do a lot more studying.

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