A variation that makes a gene different in some way from other genes for the same characteristics is a(n) _____.
A) chromosome
B) zygote
C) genotype
D) allele

Question

Quizplus · Accepted Answer

Alleles are variations of genes that occur at the same locus (position) on a chromosome. These variations can result in different traits or characteristics. Therefore, D is the correct answer. Chromosomes are structures composed of DNA that contain many genes. A zygote is a fertilized egg cell. Genotype refers to the genetic makeup of an individual, which includes both alleles for each gene. While all of these terms are important in genetics, only D refers specifically to a variation of a gene.

A Variation That Makes a Gene Different in Some Way