In humans, the brown eye gene dominates over the genes that determine the development of blue eye color, and the gene that determines the ability to better control the right hand dominates over the gene that determines the development of left-handedness. What kind of children can be if their parents are brown-eyed right-handers who do not carry recessive genes?
Let’s designate the gene for brown eyes as K, and the gene for blue eyes as k.
Let’s designate right-handedness as L, and left-handedness as l.
If both parents are brown-eyed right-handed and do not carry recessive genes, their genotypes will be written as KKLL.
Such a man and a woman produce only one type of sperm and eggs – KL.
In the offspring of a family formed by such people, absolutely all children will have the KKLL genotype, brown eyes, and predominantly own the right hand.
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