Genetics polygenic inheritance & probability

  1. 1. The problem statement, all variables and given/known data

    Height is a characteristic resulting from polygenic inheritance. If genes at four loci code for height, what is the probability that parents with the genotypes RrSSTtUu and RrSsTtUU will have a child possessing 8 tall alleles?
    Choose one answer.
    a. 1/128
    b. 1/256
    c. 0
    d. 1/64



    2. Relevant equations[/b]

    PUNNET SQUARES

    3. The attempt at a solution[/b]
    1/64

    1/4 RR, 1/2 SS, 1/4 TT, 1/2 UU

    1/4 * 1/2 * 1/4 * 1/2= 1/64
     
  2. jcsd
  3. Exactly, I'm glad you see the pattern. Genetics is pretty fun once you get the hang of it.
     
  4. Thanks!
     
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