Question

Two Martians fall in love and marry. One Martian in homozygous for red eyes and the other is heterozygous. The recessive eye color is purple. What are the chances that the alien couple will have a child with red eyes?

Answer 1

For a Martian couple with one partner homozygous for red eyes and the other heterozygous, there is a 50% chance their offspring will have red eyes due to the dominance of the red eye allele over purple.

Step-by-step explanation:

The chances that the Martian couple will have a child with red eyes is 50%. A homozygous individual with red eyes will have only alleles for red eyes to pass on, whereas the heterozygous partner has one allele for red and one for purple. When these two mate, their offspring will have a 1 in 2 chance of inheriting the red eye allele that expresses itself dominantly over the purple eye allele.