Multiple Choice
Which term describes the different forms of genes for a single trait that can contribute to changes in allelic frequency within a population?
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21. Population Genetics
Allelic Frequency Changes
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Which term best describes one of two or more versions of a gene at a specific locus in a population?
A
Genotype
B
Phenotype
C
Chromosome
D
Allele
Verified step by step guidance1
Understand the key terms involved: A gene is a segment of DNA located at a specific position (locus) on a chromosome, which can have different versions.
Define 'genotype' as the genetic makeup of an organism, referring to the combination of alleles it carries at a particular locus.
Define 'phenotype' as the observable traits or characteristics of an organism, which result from the interaction of its genotype with the environment.
Recognize that a 'chromosome' is a structure made of DNA and proteins that contains many genes, not the versions of a gene themselves.
Identify that 'allele' refers specifically to one of two or more alternative forms of a gene found at the same locus in a population, which is the correct term for the question.
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