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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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The correct answer is allele.
The correct answer is ee.
The correct answer is 50%.
The correct answer is the fraction of possible offspring that can be observed to have a trait.
To determine the answer to this question, we need to understand what a version of a gene is called. The options given are:
1. Phenotype
2. Genotype
3. Allele
4. Gamete
Let's go through each option and see if it fits the description:
1. Phenotype refers to the physical or observable traits of an organism. It does not refer to a version of a gene, so we can eliminate this option.
2. Genotype refers to the genetic makeup of an organism. It represents the combination of alleles (versions of genes) that an individual possesses. This seems like a potential match, so let's keep it for now.
3. Allele refers to one of the different forms of a gene. It represents a specific version or variant of a gene. This matches the description, so let's keep it for now.
4. Gamete refers to a reproductive cell (such as sperm or egg) that carries genetic information. It does not refer to a version of a gene, so we can eliminate this option.
Now, let's compare the remaining options:
- Genotype represents the combination of alleles.
- Allele represents a specific version or variant of a gene.
Based on this comparison, the correct answer is: "Allele."
Therefore, a version of a gene is called an allele.
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
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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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%
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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