Polymorphism

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4 Terms

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What is polymorphism?

Presence of 2 or more alleles of a gene at the same locus among individuals in a population

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What is a key concept of polymorphism?

Single Nucleotide Polymorphism

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What is single nucleotide polymorphism?

When there is a difference in just one nucleotide (A,T,G or C) at a specific position in DNA

  • Example: Most individuals might have A at certain position, while others have G

    • AATGACT vs AATGGCT

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How is SNP useful in genetics?

Act as DNA markers but the SNP must have high enough frequency

  • Detect inherited disorders

  • Identify conformation traits

  • Evaluate production traits