Snp, Dip, Snv Notation

Question

[2184687-1231-83-]

A nomenclature question. Considering:

• a SNP is a single nucleotide polymorphism, so a nucleotide change within-species of a single position, and
• a DIP is a deletion/insertion polymorphism, so an indel within-species of a single genomic position,

How would one call:

• a nucleotide change between-species of a single homologous genomic coordinate?
• how about an indel between-species of a single homologous genomic coordinate?

Is there an official or recognized nomenclature for them?

[Jeremy Leipzig]

do you have a reference to that definition of SNV?

[Russh]

I thought the difference between SNP and SNV was one of population frequency (SNP being a frequently observed SNV) not of intra versus inter species differences

Answer 1

[Boboppie]

It might clarify the SNP and SNV by reading this blog - "SNP vs. SNP"?

Quote:

SNP (single nucleotide polymorphism) vs. SNV (single nucleotide variant) As their name suggests, both are concerned with aberrations at a single nucleotide. However, a SNP is when an aberration is expected at the position for any member in the species – for example, a well characterized allele. A SNV on the other hand is when there is a variation at a position that hasn’t been well characterized – for example, when it is only seen in one individual. It is really all a question of frequency of occurrence.

[2184687-1231-83-]

I changed my question accordingly

Answer 2

[scott.a.fay]

Single-nucleotide and indel/delins changes between species are phylogenetic characters; they can be either informative or uninformative depending on the taxa being considered.

http://biomed.brown.edu/Courses/BIO48/26.Systematics.HTML