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A polymorphic marker is a genetic marker that exhibits variability in the DNA sequence among individuals within a population. This variability can occur in the form of single nucleotide polymorphisms (SNPs), insertions, deletions, or variations in repeat sequences. Polymorphic markers are valuable in genetic studies for mapping traits, understanding population genetics, and conducting association studies, as they help reveal genetic diversity and evolutionary relationships. Their presence in a population indicates that multiple alleles exist at a specific locus.

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1mo ago

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