A brown-eyed right-hander, heterozygous on both grounds, marries a blue-eyed left-hander. What offspring can

A brown-eyed right-hander, heterozygous on both grounds, marries a blue-eyed left-hander. What offspring can be expected from such parents according to the indicated characteristics? The genes for core-eye and right-handedness are dominant and are located on different chromosomes.

Let’s designate brown-eyed as “A”, right-handedness as “B”, then blue-eyed will be designated “a”, left-handedness – “b”.

The mother, left-handed with blue eyes, as having both recessive traits, will have the aavv genotype. Homozygosity is a condition under which a recessive trait acquires the ability to be realized in a phenotype. Possible mother’s oocytes are of the same type: ab.

The father, according to the condition of the problem, is heterozygous in two ways, therefore his genotype looks like this: AaBb. Possible spermatozoa of the father: AB, ab, Ab and ab.

Probable offspring:

brown-eyed right-handed children (AaBb);

brown-eyed left-handed children (Aabb);

blue-eyed right-handed children (aaBb);

blue-eyed left-handed children (aabb).