Genetics Question The presence of a beard on some goats is determined by an autosomal gene...
Genetics Question
The presence of a beard on some goats is determined by an autosomal gene that is dominant in males and recessive in females. Heterozygous males are bearded, while heterozygous females are beardless. What type of inheritance is exhibited by this trait?
Sex-influenced
Autosomal dominant
Autosomal recessive
Sex-linked
Sex-limited
Homework Answers
This is Sex influenced inheritance.
Sex influenced traits inherited according to Mendel's principles, but it is dominant in one gender and recessive in another gender. Penetrance is very high in one sex for this inheritance.
This trait is autosomal, but influenced by the sex of the individual. If a male possess one recessive allele , he will show the trait (act as dominant in male) But in case of female two copies of that allele is needed (act as recessive).
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sex-linked
2) indicate whether the transmission appears dominant or
recessive
3) provide at least two characteristics for each that support
your conclusion.
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