In humans, two traits, rolling the tongue and the ability to taste PTC, depend on separate dominant genes located on different chromosomes. A man that can roll the tongue (assume he is homozygous) that cannot taste PTC married a woman that can not roll the tongue that can taste PTC […]

A)    In Drosophila (fruit flies) ebony body color and being eyeless are both autosomal recessive traits. An ebony fly is mated with an eyeless fly and the F1 are all wild type. The F2 are:                                  590 wild type 185 eyeless 200 ebony 72 eyeless and ebony     Test the hypothesis that […]

Imagine a rabbit. A conejo. Its coat color is controlled by several loci, among them the C locus. C has several alleles; three of them are: C = full color (“chestnut agouti”), cch = chinchilla; c = albino. C is dominant to cch or c; cch is dominant to c; […]

Question 1How did the phrase “dumb jock” come to be? (This is a rhetorical question.) The phrase reflects two characteristics, intelligence and athletic prowess. Let us suppose that above average intelligence occurs in 25 out 100 children and superior athletic prowess occurs in 1 out 50 children. Using the rules […]