Multiple Choice
In the context of fundamentals of genetics, which statement best describes the relationship between genotype and phenotype in most traits?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In fundamental genetics, what best describes the relationship between a gene and an allele?
A
A gene is a DNA sequence that influences a trait, and an allele is an alternative version of that gene at the same locus.
B
A gene is an alternative version of an allele, and alleles are always longer DNA sequences than genes.
C
Genes are found only in RNA, while alleles are found only in DNA.
D
A gene refers to a chromosome, and an allele refers to a trait.
Verified step by step guidance1
Understand the definition of a gene: A gene is a specific sequence of DNA that codes for a particular trait or protein.
Recognize what an allele is: An allele is a variant form of a gene that exists at the same position (locus) on a chromosome.
Note that alleles differ in their DNA sequence, which can lead to variations in the trait they influence.
Clarify that genes are not alternative versions of alleles; rather, alleles are different versions of the same gene.
Conclude that the correct relationship is that a gene is a DNA sequence influencing a trait, and an allele is an alternative version of that gene at the same locus.
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