Define Single Nucleotide Polymorphism

Multiple Choice

Define single nucleotide polymorphism.

A) A single nucleotide polymorphism is the presence of a single gene at one locus.
B) A single nucleotide polymorphism is a variation in a single base pair in a DNA sequence.
C) A single nucleotide polymorphism is a truncated chromosome.
D) A single nucleotide polymorphism is a missing chromosome in a set.
E) A single nucleotide polymorphism is when a single nucleotide controls the allele's phenotypic expression.