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anonymous

  • one year ago

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  1. anonymous
    • one year ago
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    The wing color of a certain species of moth is controlled by alleles at a single locus. Gray (G) is dominant to white (g). A scientist studied a large population of these moths, tracking the frequency of the G allele over time, as shown in the figure below.

  2. anonymous
    • one year ago
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  3. anonymous
    • one year ago
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    Assuming that the population was in Hardy-Weinberg equilibrium for this gene, what percentage of the moth population was homozygous recessive (gg) in 1975?

  4. anonymous
    • one year ago
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    A) 25% B) 36% C) 64% D) 75%

  5. anonymous
    • one year ago
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    @amistre64 @Nnesha @Compassionate @mathmate

  6. amistre64
    • one year ago
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    define: Hardy-Weinberg equilibrium

  7. anonymous
    • one year ago
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    p + q = 1?

  8. anonymous
    • one year ago
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    I think the answer is C by the way.

  9. amistre64
    • one year ago
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    the wiki defines it as: allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

  10. anonymous
    • one year ago
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    Okay

  11. amistre64
    • one year ago
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    that simply means that the ratio remains consistent .... how to apply that i dont know yet, need to scour the google some more

  12. anonymous
    • one year ago
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    Okay please do. I really need this :D

  13. amistre64
    • one year ago
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    ok, i see the p+q=1 in that f(AA) = p^2 f(aa) = q^2 f(Aa) = 2pq which are the terms of the expansion of: (p+q)^2 = 1

  14. anonymous
    • one year ago
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    Okay I understand so far.

  15. amistre64
    • one year ago
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    Gg is a geno type? G and g are alleles? or how do we define those words?

  16. anonymous
    • one year ago
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    Yes that is how we define it in my class as well.

  17. amistre64
    • one year ago
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    im trying to determine how we go from a frequency an allele of G, to determining a genotype of (gg)

  18. amistre64
    • one year ago
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    a pundit square is like G g G GG Gg g Gg gg g g G Gg Gg g gg gg g g G Gg Gg G Gg Gg

  19. anonymous
    • one year ago
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    Yes

  20. anonymous
    • one year ago
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    So would my answer be correct?

  21. amistre64
    • one year ago
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    i cannot verify your answer, i simply do not have enough experience with this stuff to confirm or deny it. it 'seems' like a good answer; but can you back up its reasoning? even then, i cant verify it.

  22. anonymous
    • one year ago
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    Okay thank you so much! @amistre64

  23. amistre64
    • one year ago
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    good luck with it

  24. amistre64
    • one year ago
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    i wonder \[(G+g)^2=1\] \[GG+2Gg+\underbrace{gg}_{\text{solution ?}}=1\]

  25. amistre64
    • one year ago
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    if G is between .4 and .5 g is between .5 and .6 gg, or g^2, is between .25 and .36 but of course both of those extremes are solution options, and i dont see an option between them so this idea might not hold any value

  26. amistre64
    • one year ago
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    http://www.k-state.edu/parasitology/biology198/answers1.html ok, the idea is good ... at least according to this

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