Leprechauns are normally green but rare white leprechauns ex

Leprechauns are normally green, but rare white leprechauns exist. Two white leprechauns have one green child and one white child. Is the white trait dominant or recessive? What information did you use to reach this conclusion? What are the genotypes of the parents?

Solution

a. Wild type phenotypes most commonly observed in population and most of the wild type characters are dominant in nature. Moreover if the two parents are white, and they are dominant white phenotype, then all the progeny must with white phenotype. But the progeny contain green and white. So white is not a dominant phenotype

b. White substrate------------A--------> White intermediate-------------B----------------> Green product

If we assumes this gene interaction, then the parents genotypes are AAbb and aaBB

If we cross these genotyprs, the progeny will give both green and white phenotypes