Pretest

Question 1

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the cap f sub 1 generation have both purple and white flowers. What can the scientist conclude?

Revolt · Accepted Answer

C: Neither purple flowers nor white flowers are dominant.

Question 2

Why did Gregor Mendel use peas in his experiments?

Revolt · Accepted Answer

C: Peas have characteristics that have two forms.

Question 3

In pea plants, tall plant height is dominant over short plant height. If there are 200 short plants in the cap f 2 generation from a cross that followed Mendel’s methods, about how many plants will be tall in that generation?

Revolt · Accepted Answer

C: 600

Question 4

Which statement best describes an understanding of genetics that would be missing without the work of Mendel?

Revolt · Accepted Answer

C: Some alleles are dominant, and some alleles are recessive.

Question 5

What controls traits and inheritance?

Revolt · Accepted Answer

B: nucleic acids

Question 6

The flowchart shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits. Expand Image In which squares should the phrase “Green pods” appear?

Revolt · Accepted Answer

D: cap A ,  cap c , and  cap d  only

Question 7

Which statement describes Mendel’s hypotheses regarding gametes?

Revolt · Accepted Answer

B: A gamete carries one allele for a gene.

Question 8

What is a gene?

Revolt · Accepted Answer

B: a section of DNA that codes for a specific trait

Question 9

Gregor Mendel’s research formed the basis of the field of

Revolt · Accepted Answer

A: genetics.

Question 10

Which statement describes the offspring of the cap f sub 1 generation when crossing a pea plant that is true breeding for green seeds with a pea plant that is true breeding for yellow seeds?

Revolt · Accepted Answer

C: The offspring will inherit one allele from each parent.

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