Multiple Choice
In the context of fundamentals of genetics, what is an organism’s phenotype?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
In the context of Mendelian genetics, which of the following is an example of an allele?
A
A phenotype such as green seeds
B
A version of a gene such as the A allele for seed color
C
A chromosome such as chromosome 7
D
A complete set of DNA in an organism (the genome)
Verified step by step guidance1
Understand the definition of an allele: An allele is a specific version or variant of a gene that can exist at a particular locus on a chromosome.
Recognize that a phenotype, such as green seeds, is the observable trait resulting from the expression of one or more alleles, not the allele itself.
Identify that a chromosome is a structure that contains many genes, so it is not an allele but rather a larger unit of genetic material.
Know that the genome is the complete set of DNA in an organism, encompassing all chromosomes and genes, so it is broader than an allele.
Conclude that the correct example of an allele is a version of a gene, such as the A allele for seed color, because it represents a specific variant of a gene.
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