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How would you determine the genotype of your short hair guinea pig, assuming that hair length is determined by one allele and is a dominant phenotype to long hair. Please show your work.

User Qstebom
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Answer:

Short hair is dominant which means it can express in both heterozygous(Hh) and homozygous condition(HH). If all the progeny have short hair, then the parents should have been either:

HH x HH OR HH x Hh OR HH x hh

User Fenix
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