Let’s assume/pretend that webbed toes are a recessive trait (we are assuming this because it’s not fun to pretend your niece was born with an actual genetic disease).

Let’s assume/pretend that webbed toes are a 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 and your fraternal twin brother does not have webbed toes. It is a surprise when your new niece is born to your brother and his wife with two webbed toes.

What is your brother’s genotype and phenotype? What is your sister-in-law’s genotype and phenotype? What is your niece’s phenotype and genotype?

Do you have enough information to know your genotype? Speculate on the possibilities. What are the chances that your children will be born with webbed-toes? How do you know?