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Question

Question
A version of a gene is called a(n)(1 point)
Responses

phenotype.
phenotype.

genotype.
genotype.

allele.
allele.

gamete.
gamete.
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Answer 1

The correct answer is allele.

Answer 2

The trait for blue eyes in humans is caused by a recessive allele. If this gene is named e, what is the genotype of a blue-eyed person?(1 point)
Responses

Ee
Ee

E
E

ee
ee

EE

Answer 3

The correct answer is ee.

Answer 4

Describe the relationships among genes, DNA, and traits.(1 point)
Responses

Traits are determined by genes, which are composed of DNA.
Traits are determined by genes, which are composed of DNA.

Traits are made of genes, which are composed of DNA.
Traits are made of genes, which are composed of DNA.

Genes code for traits, which are composed of DNA.
Genes code for traits, which are composed of DNA.

Traits determine the DNA in genes.
Traits determine the DNA in genes.
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Answer 5

The correct answer is Genes code for traits, which are composed of DNA.

Answer 6

In mice, the gene for tail length has two alleles. A long tail is dominant to a short tail. If a long-tailed mouse that is heterozygous mates with a short-tailed mouse, what are the chances of having offspring with short tails?(1 point)
Responses

100%
100%

75%
75%

25%
25%

50%

Answer 7

The correct answer is 50%.

Answer 8

Question
What is meant by a phenotype ratio in a Punnett square?(1 point)
Responses

the number of genes that are possible in offspring
the number of genes that are possible in offspring

the number of alleles in possible offspring
the number of alleles in possible offspring

the fraction of possible offspring that can be observed to have a trait
the fraction of possible offspring that can be observed to have a trait

the fraction of possible offspring that contain a certain allele in their genes
the fraction of possible offspring that contain a certain allele in their genes
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Answer 9

The correct answer is the fraction of possible offspring that can be observed to have a trait.