Quiz 1

Match the following definitions with their correct terms.

A parent that is heterozygous for two different traits (AaBb) can pass any combination of two alleles (AB, Ab, aB, or ab) to its offspring.  Which statement explains why this is possible?

Cartina’s eyes are brown, just like her mother’s eyes.  Cartina has long fingers like her father, but her mother’s fingers are much shorter.  What is the most likely reason why Cartina’s appearance is similar to and different from that of her parents?

Inheriting two copies of a recessive allele causes an individual to die before reaching sexual maturity.  How is it that this recessive allele can be passed on from one generation to the next?

What evidence in pea plant crosses supported Mendel’s Law of Independent Assortment?

There is a pair of identical twins in Ajani’s class.  One of them was affected by a severe illness during his first few months of life.  Although he survived, he is much shorter than his twin brother.  How is this difference explained?

Gregor Mendel’s work with pea plants caused him to state that different versions of genes caused variations in inherited features.  This supports the concept of

Which statement is an example of one of Gregor Mendel’s experimental outcomes?

Which of Gregor Mendel’s discoveries is represented when a black dog and a white dog mate, and all the resulting puppies are black?

Through his experiments with pea plants, Gregor Mendel concluded that inheritance of traits is determined by

A couple has two children, one with brown hair and blue eyes and one with brown hair and brown eyes.  The fact that the children can have the same hair color but different eye color is explained by the

Timothy has attached earlobes.  His mother and father both have free earlobes, which are dominant.  Which statement explains how Timothy inherited attached earlobes?

Mice with the same parents can have different traits.  Which of the following best explains how most of these differences occur?

A particular species of moth can have green or yellow scales on its wings.  The scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. When moths that are homozgyous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.  Based on this information, how do the alleles for scale color interact?

Match the following descriptions with their correct definition.

How did Gregor Mendel cross-pollinate plants?