DNA sequences that contribute to polygenic traits are called
A)qualitative trait loci.
B)quantitative trait loci.
C)multifactorial trait loci.
D)single nucleotide polymorphisms.

Question

Quizplus · Accepted Answer

DNA sequences that contribute to polygenic traits are called quantitative trait loci (QTLs). QTLs are responsible for the variation in numerous complex traits, such as height, weight, and intelligence. They involve the contribution of multiple genes, making them different from qualitative traits that are determined by a single gene. Multifactorial trait loci also contribute to complex traits, but they involve both genetic and environmental factors. Single nucleotide polymorphisms (SNPs) are variations in a single nucleotide in a DNA sequence and can act as markers for QTLs.

DNA Sequences That Contribute to Polygenic Traits Are Called