An individual homozygous dominant for the thumb shape mates with an individual homozygous recessive for thumb...
An individual homozygous dominant for the thumb shape mates with an individual homozygous recessive for thumb shape. What are the predicted genotypic and phenotypic ratios for the cross?
Dominant Allele: Straight thumb (H)
Recessive Allele: Hitchhiker's (h)
Homework Answers
the genotype of the homozygous dominant for the thumb shape is HH and the genotype of the homozygous recessive is hh.
HH * hh
| H | H | |
| h | Hh ( straight thumb) | Hh ( straight thumb) |
| h | Hh ( straight thumb) | Hh ( straight thumb) |
genotypic ratio is
HH:Hh:hh=0:1:0
phenotypic ratio is
straight thumb : hitchhiker's thumb= 1:0
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