Let’s assume/pretend* that webbed toes are an autosomal recessive trait (we are
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Let’s assume/pretend* that webbed toes are an autosomal recessive trait (we are assuming this because it’s not fun to pretend your niece was born with an actual genetic disease).
You do not have webbed toes but your fraternal twin brother does have webbed toes. Your brother has a baby girl (your niece) who is born with webbed toes and a baby boy (your nephew) who is born with normal toes.
What are your brother’s genotype and phenotype? What are your sister-in-law’s genotype and phenotype? What are your niece’s genotype and phenotype? What are your nephew’s genotype and phenotype? Draw a Punnett square and show your brother and his wife and their two children (your niece and nephew).
Figure out your possible genotypes. What are the chances that your children will be born with webbed-toes? How do you know? Draw at least one Punnett Square indicating your chances of having a child born with webbed toes. Label all of the elements.