Multiple Choice
In genetics, one form of a gene is called a(n):
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1. Introduction to Genetics
Fundamentals of Genetics
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In the context of Mendelian genetics, which statement correctly distinguishes genotype from phenotype?
A
Genotype and phenotype are identical terms; both describe only the DNA sequence of an organism.
B
Genotype refers to the observable traits of an organism, whereas phenotype refers to its allele combination for a gene.
C
Genotype refers to an organism’s allele combination for a gene, whereas phenotype refers to the observable traits resulting from the genotype and environment.
D
Genotype describes traits influenced only by the environment, whereas phenotype describes traits determined only by alleles.
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