Chapter 4 Review Questions

What was the name of the Austrian monk who studied the principles of heredity in the early 1860s?

• Charles Darwin

• Gregor Mendel

• Reginald Punnett

• Johann Nestler

The offspring of purebred pea plants with round seeds will always have (a)   seeds.

• round
• wrinkled
• yellow
• some round and some wrinkled

When Mendel crossed purebred pea plants having green pods with purebred pea plants having yellow pods, the offspring were all

• purebred peas with green pods

• purebred peas with yellow pods

• hybrid peas with all green pods

• hybrid peas with some green and some yellow pods

The study of how traits are passed from one generation to the next is called __________.

• alleles

• heredity

• hybridology

• simple dominance

Alleles for a dominant trait are represented with __________ letters.

• uppercase

• lowercase

• Greek

• underlined

An organism's __________ is inherited from its parents.

• dominance

• genotype

• genetic drift

• phenotype

Which of the following is a phenotype?

• Bb

• black fur

• a pea plant

• a Punnett square

A Punnett square determines

• which genotype an offspring will have

• which phenotype an offspring will have

• how likely an offspring is to have a certain genotype

• how many offspring will be produced

If a father is purebred for the dominant trait of dimples (DD) and a mother is purebred for not having dimples (dd), then you should expect the couple's children

• to all be DD

• to all be Dd

• to be either DD or Dd

• to be either DD, Dd, or dd

Which of the following is an example of codominance?

• pink snapdragon flower color

• crossing a tall plant and a short plant to produce a medium plant

• crossing a pea plant with round seeds and a pea plant with wrinkled seeds to produce a pea plant with round seeds

• crossing a white horse and a black horse to produce a horse with both black hairs and white hairs