Question

What explains why human eyes come in a variety of colors?

Many phenotypes have pairs of alleles.

Multiple alleles result in many phenotypes.

Multiple genes each have only one allele.

Different phenotypes result in different genes.

Answer 1

These factors contribute to the variety of eye colors in humans. Eye color is determined by the amount and type of melanin in the iris, which is controlled by several different genes. Variations in these genes and their alleles can lead to a wide range of eye colors, including blue, green, brown, and hazel. Additionally, environmental factors such as sunlight exposure can also play a role in determining eye color.