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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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ehd123 ehd123
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Posts: 778
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8 years ago
What are DNA polymorphisms and what are the causes of DNA polymorphisms?
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4 Replies
B.Sc in Biology
M.Sc Neuroscience
PhD. Candidate in Neuroscience

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wrote...
#1
8 years ago
DNA-polymorphism is when there is one of two or more alleles of a chromosomal locus that differ in nucleotide sequence or have variable numbers of repeated nucleotide units. To know whether a chromosomal locus is polymorphic, you compare genomes (for example, the two haploid genomes of a diploid organism or the two diploid genomes of two diploid organisms). DNA polymorphisms can be found in coding and in non-coding regions.
ehd123 Author
wrote...
#2
Valued Member
8 years ago
Thank you but that is not exactly what I was looking for. I am well aware of what polymorphisms are, but I am not sure how they arise or what causes them.. Do you by any chance have an idea about that?

I was thinking natural selection or evolution or degeneracy of the genetic code, but I am not sure..
B.Sc in Biology
M.Sc Neuroscience
PhD. Candidate in Neuroscience
wrote...
#3
Educator
8 years ago
DNA polymorphisms arise as a result of random/spontaneous mutations
ehd123 Author
wrote...
#4
Valued Member
8 years ago
Well noted thank you Upwards Arrow
B.Sc in Biology
M.Sc Neuroscience
PhD. Candidate in Neuroscience
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