A DNA mutation that gives a distinguishable phenotype for a chromosome or gene is a
A)recessive allele.
B)lethal mutation.
C)parental type.
D)linkage group.
E)genetic marker.

Question

Quizplus · Accepted Answer

A genetic marker is a DNA sequence that is associated with a particular trait or phenotype, and can therefore be used to identify individuals or populations with that trait. Genetic markers can be created by mutations that alter the DNA sequence in a way that is detectable, or by polymorphisms that result in different versions of the same DNA sequence. Markers can be used to study inheritance patterns, genetic diversity, and population structure, as well as for genetic mapping and gene therapy.

A DNA Mutation That Gives a Distinguishable Phenotype for a Chromosome