Respuesta :
If a man who is homozygous dominant [ 'HH' ] for the genes controlling this trait mates with a woman who is homozygous recessive [ 'hh' ] the likelihood of their offspring having hitchhiker's thumb will be 0%.
- The absence of hitchhiker's thumb reflects a dominant hereditary status and the presence of hitchhiker's thumb a recessive status.
- thus the man with HH will be homozygous dominant and the hitchhiker's thumb will b absent.
- the woman with hh will be homozygous recessive and the hitchhiker's thumb will be present.
Mating the male and female the following cross is obtained:
HH X hh (parents)
Hh, Hh, Hh, Hh (offspring)
Hence the hitchhiker's thumb will be absent in all the offspring as they will be heterozygous dominant for the trait. Thus, the likelihood their offspring will have hitchhiker's thumb is 0%.
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If a man who is homozygous dominant [ 'HH' ] for the genes controlling this trait mates with a woman who is homozygous recessive [ 'hh' ] the likelihood of their offspring having hitchhiker's thumb will be 0%.
What is a hitchhiker's thumb?
Some folks have extremely mobile thumbs. This indicates that they bend backward more than usual. Hitchhiker's thumb is referred to in medicine as distal hyperextensibility. The Z-shaped malformation of the thumb is another name for it. Both the pain and difficulty using your hands are unaffected by the hitchhiker's thumb.
When a hitchhiker's thumb is present, a recessive hereditary status is present, and when it is absent, a dominant hereditary status is present.
As a result, the hitchhiker's thumb won't exist in the homozygous dominant HH male.
The hitchhiker's thumb will be present in the homozygous recessive female hh.
The following cross is produced once the male and female are mated:
HH X hh (parents)
Hh, Hh, Hh, Hh (offspring)
As all of the offspring will be heterozygous dominant for the trait, no one will have the hitchhiker's thumb. Therefore, there is a 0% chance that their offspring will have a hitchhiker's thumb.
learn more about hitchhiker's thumb here: brainly.com/question/20711936
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