George's parents both have brown eyes. His dad's genotype has two dominant alleles for eye colour. His mom's genotype has one dominant and one recessive allele for eye colour. What is the probability of George having blue eyes?

Question

Quizplus · Accepted Answer

Given that brown eyes are dominant, George's dad's genotype is BB (two dominant alleles) and his mom's genotype is Bb (one dominant and one recessive allele). For George to have blue eyes, he would need to inherit two recessive alleles (bb), which is impossible given his dad's BB genotype. Therefore, there is a zero percent chance of George having blue eyes.

George's Parents Both Have Brown Eyes