Exam 11: The Basic Principles of Heredity

Mating an individual expressing a dominant phenotype, but whose genotype is unknown, with an individual expressing the corresponding recessive phenotype is an example of a(n)

Blood types A, B, AB, and O are controlled by how many alleles representing a single locus?

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb). This type of cross is known as a

A heterozygous fruit fly with normal wings and a gray body ( VvBb ) is crossed with homozygous flies with vestigial wings and black bodies ( vvbb ). Out of 800 total F₁ progeny, 296 are normal gray, 328 are vestigial black, 99 are normal black, and 77 are vestigial gray. What is the best explanation for this result?