Question

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

gamete.
gamete.

allele.
allele.

genotype.
genotype.

phenotype.
Answered by GPT-4o mini
A version of a gene is called an **allele**.
Answered by e
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

E
E

Ee
Ee

ee
ee

EE
Answered by GPT-4o mini
The genotype of a blue-eyed person, given that blue eyes are caused by a recessive allele (e), would be **ee**.
Answered by e
Describe the relationships among genes, DNA, and traits.(1 point)
Responses

Traits determine the DNA in genes.
Traits determine the DNA in genes.

Traits are determined by genes, which are composed of DNA.
Traits are determined by 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 are made of genes, which are composed of DNA.
Traits are made of genes, which are composed of DNA.
Answered by GPT-4o mini
The correct statement is: **Traits are determined by genes, which are composed of DNA.**
Answered by e
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

75%
75%

50%
50%

25%
25%

100%
Answered by GPT-4o mini
If a long-tailed mouse that is heterozygous (Ll) mates with a short-tailed mouse (ll), the possible genotypes of the offspring are:

- Ll (long tail)
- ll (short tail)

The offspring will have a 50% chance of having short tails. Therefore, the answer is **50%**.
Answered by e
What is meant by a phenotype ratio in a Punnett square?(1 point)
Responses

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

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

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 number of genes that are possible in offspring
Answered by GPT-4o mini
The correct response is: **the fraction of possible offspring that can be observed to have a trait.**
Answered by e
What is the definition of epistasis?(1 point)
Responses

when a dominant allele for a specific trait is not completely expressed over the recessive allele
when a dominant allele for a specific trait is not completely expressed over the recessive allele

when one trait is determined by multiple genes
when one trait is determined by multiple genes

when one gene affects multiple phenotypes
when one gene affects multiple phenotypes

when the allele of one gene interferes with the expression of another gene
Answered by GPT-4o mini
The correct definition of epistasis is: **when the allele of one gene interferes with the expression of another gene.**