Exam 13: Patterns in Inherited Traits

In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). In the F₂ generation of a cross between BB ss with bb SS, what fraction of the offspring would be expected to be black and spotted?

If all the offspring of a testcross are alike and resemble the organism being tested, then that parent is ____.

Diploid cells have _____ copies of each gene.

In the nineteenth century, most people believed that ____.

Assume short hair (L) is dominant to long hair (l), and black hair (B) is dominant to brown (b). If you found a black short-haired animal, you could determine its genotype by crossing it to an animal with a genotype of ____.

Susan, a mother with type B blood, has a child with type O blood. She claims that Craig, who has type A blood, is the father. He claims that he cannot possibly be the father. Further blood tests ordered by the judge reveal that Craig has genotype AA. What can we predict about the judge's ruling?

A bell-shaped curve of phenotypic variation is a representation of ____.

If a child has blood type O, he or she could not have been produced by which set of parents?

Match the term with the most appropriate description.​ -A single gene affects multiple traits.

A person with one copy of a mutated CFTR gene will ____.

Coat color in one breed of mice is controlled by incompletely dominant alleles so that yellow and white are homozygous, whereas cream is heterozygous. The cross of two cream individuals will produce ____.

Match the term with the most appropriate description.​ -Gene for which three or more alleles persist in a population at relatively high frequency.

A homozygote contains two _____.

The CFTR gene encodes a protein that ____.