Ask Question
25 May, 22:34

g In humans, a widow's peak hairline is dominant while a straight hairline is recessive. Tom and Sue both have a widow's peak but their son Joe has a straight hairline. If they have another child, what is the genetic probability of that child having a widow's peak hairline

+2
Answers (1)
  1. 25 May, 23:27
    0
    3/4

    Explanation:

    In humans, a widow's peak hairline is dominant while a straight hairline is recessive.

    Tom and Sue both have a widow's peak but their son Joe has a straight hairline.

    For Joe to have a straight haircut which is inherited in the recessive condition, that means both parent each has a recessive allele copy for this trailer making them heterozygotes for the trait.

    If the widow's peak allele is W (genotype for heterozygote would be Ww)

    A cross between these two heterozygotes gives

    Ww x Ww

    WW Ww Ww ww

    3/4 widow's peak 1/4 straight hair line

    The genetic probability of that child having a widow's peak hairline is 3/4 ...
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “g In humans, a widow's peak hairline is dominant while a straight hairline is recessive. Tom and Sue both have a widow's peak but their son ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers