Multiple Choice
In genetics, what term describes different versions of a gene found at the same locus?
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1. Introduction to Genetics
Fundamentals of Genetics
Multiple Choice
Which of the following is an example of a phenotype?
A
A DNA nucleotide sequence
B
A heterozygous genotype (Aa)
C
An allele of a gene
D
Blue eye color
Verified step by step guidance1
Understand the definition of phenotype: A phenotype is the observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.
Recognize that a DNA nucleotide sequence is the genetic code itself, which is part of the genotype, not the phenotype.
Identify that a heterozygous genotype (Aa) describes the genetic composition of an organism at a specific gene locus, which is also part of the genotype.
Know that an allele of a gene is a variant form of a gene and is part of the genotype, not the phenotype.
Conclude that 'Blue eye color' is an observable trait, making it an example of a phenotype.
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