Multiple Choice
Which of the following statements about primary spermatocytes and spermatogonia in humans is correct?
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1. Introduction to Genetics
Fundamentals of Genetics
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Which statement best describes the relationship among the terms gene, locus, and allele?
A
A locus is a type of gene, and alleles are the proteins produced by that gene.
B
An allele is a location on a chromosome, while a gene is one possible sequence at that location.
C
Genes and alleles are identical, and locus refers to the entire chromosome.
D
A gene is a segment of DNA located at a specific locus, and different alleles are alternative forms of that gene found at the same locus.
Verified step by step guidance1
Step 1: Understand the definition of a gene. A gene is a segment of DNA that contains the instructions to make a specific protein or RNA molecule.
Step 2: Define locus. A locus is the specific physical location or position of a gene on a chromosome.
Step 3: Define allele. An allele is one of the different versions or alternative forms of a gene that can exist at a particular locus.
Step 4: Recognize the relationship: each gene occupies a specific locus on a chromosome, and at that locus, there can be multiple alleles representing variations of that gene.
Step 5: Summarize the relationship: a gene is a DNA segment at a locus, and alleles are the variant forms of that gene found at the same locus.
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