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Introduction to Genetics — Quiz Answers

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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?

A
Neither purple flowers nor white flowers are dominant.
B
All the plants in the cap f sub 2 generation will have purple flowers.
C
The plants in the cap p generation were not true-breeding.
D
White flowers are dominant over purple flowers.
3

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

A
selective breeding.
B
dominance.
C
genetics.
D
recessiveness.
4

Why did Gregor Mendel use peas in his experiments?

A
Peas grow very slowly.
B
Peas have characteristics that have two forms.
C
Pea reproduction cannot be controlled.
D
Peas normally produce very few offspring.
5

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

A
The DNA codes for traits would not be known.
B
Some alleles are dominant, and some alleles are recessive.
C
Offspring receive two copies of each allele from each parent.
D
The protein codes for traits would not be known.
6

What is a gene?

A
the visible trait in the cap f sub 1 generation
B
a section of a protein that codes for DNA
C
the alternate version of a trait
D
a section of DNA that codes for a specific trait
7

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?

A
The green trait is the dominant trait.
B
The offspring will inherit one allele from each parent.
C
The offspring will have both green and yellow seeds.
D
Each offspring will have a unique set of alleles.
8

Which statement describes Mendel’s hypotheses regarding gametes?

A
A gamete carries two genes for a trait.
B
A gamete can carry multiple alleles for a trait.
C
A gamete carries one allele for a gene.
D
Some gametes are dominant and some are recessive.
10

What controls traits and inheritance?

A
temperature
B
proteins
C
gametes
D
nucleic acids

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