HEREDITY
LAW OF DOMINANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gene
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phenotype
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genotype
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probability
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Detailed explanation-1: -Both parents with blue eyes: 99% chance of baby with blue eyes, 1% chance of baby with green eyes, 0% chance of baby with brown eyes. Both parents with green eyes: 75% chance of baby with green eyes, 25% of baby with blue eyes, 0% chance of baby with brown eyes.
Detailed explanation-2: -Which makes it impossible for two blue-eyed parents to have a brown-eyed child–they don’t have a brown eye gene to pass on! In fact, this is the model we used for our eye color calculator.* And that we talk about extensively here at Ask a Geneticist.
Detailed explanation-3: -The brown eye form of the eye color gene (or allele) is dominant, whereas the blue eye allele is recessive. If both parents have brown eyes yet carry the allele for blue eyes, a quarter of the children will have blue eyes, and three quarters will have brown eyes.