AnswersFall 24 GSE Biology A ICLaws of Inheritance

Laws of Inheritance Answers

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Which statement summarizes the law of segregation?

A
Gametes are passed in pairs, groups, or sets.
B
Traits that are dominant mask traits that are recessive.
C
Gametes carry one allele for each trait.
D
Traits are passed independently of one another.
2
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Which of Mendel's laws or principles explains that traits are passed from parents to offspring individually instead of as pairs, groups, or sets?

A
the principle of dominance
B
the law of independent assortment
C
the law of segregation
D
the principle of genetics
3

Parents that are heterozygous for having freckles (dominant) are crossed. Which correctly describes their offspring?

A
Twenty-five percent have freckles.
B
Twenty-five percent are Ff.
C
Seventy-five percent have freckles.
D
Seventy-five percent are Ff.
4

What is a gene?

A
the different forms of a trait
B
a segment of DNA that is the basic unit of heredity
C
the appearance or characteristics that are seen in an organism
D
an organism's allele combination
5

What can be known about Mendel’s five-part hypothesis?

A
It is an answer to a scientific question and is based mostly on his research.
B
It identifies three alleles for each gene.
C
It is an answer to a scientific question and is based on publications on genetics.
D
It identifies one allele for each gene.
6

Why did Mendel study pea plants?

A
They reproduce asexually and have one trait that is easy to observe.
B
They reproduce asexually and have many traits that are easy to observe.
C
They reproduce sexually and have one trait that is easy to observe.
D
They reproduce sexually and have many traits that are easy to observe.
7

A pea plant that has round seeds has the genotype Rr. It is crossed with a pea plant that has wrinkled seeds and the genotype rr. What is the probability that the offspring will have wrinkled seeds?

A
0 percent
B
25 percent
C
50 percent
D
75 percent
8

Two plants are heterozygous for seed shape and have round seeds. If the two plants are crossed, what is the probability that the offspring will have wrinkled seeds?

A
25 percent
B
50 percent
C
75 percent
D
100 percent
9

When Mendel crossed purebred purple flowering plants (PP) with purebred white flowering plants (pp), what were the flower colors of the resulting offspring?

A
25 percent white and 75 percent purple
B
50 percent white and 50 percent purple
C
100 percent purple
D
100 percent white
10

What does the notation Rr mean to geneticists?

A
heterozygous alleles
B
homozygous alleles
C
dominant alleles
D
recessive alleles

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