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Homework Help: Genetics dihybrid cross

  1. Jul 6, 2010 #1
    1. The problem statement, all variables and given/known data
    In an organism, two separate genes influence the length of the hair. The allele for long hair, L, dominates the allele for short hair, l. The allele for hair, H, dominates the hairless allele, h. In the cross between parents of genotype LlHh and llHh, what ratio of phenotypes would you expect to see?


    2. Relevant equations
    LlHh x llHh----> LH, Lh, lH, lh x lH, lh, lH, lh


    3. The attempt at a solution

    3:3:2 ratio (3 long hair, 3 short hair, 2 no hair)
     
  2. jcsd
  3. Jul 7, 2010 #2
    Yep, I worked out 3/8 long hair, 3/8 short, and 2/8 bald... which is the 3:3:2 ratio as well.... I feel pretty confident in that answer.
     
  4. Jul 7, 2010 #3
    thanks so much....just wanted to be sure!!
     
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