pseudoallelen.
/ˈs(j)uːdəʊəˌliːl/, /ˈs(j)uːdəʊˌaliːl/, U.S. /ˈsudoʊəˌlil/ Genetics.
Each of two or more mutations that are allelic functionally, in that they affect the same process or property, but not structurally, in that crossing over is possible between them.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > [noun] > changes or actions of genes or chromosomes > mutation > where cross-over still possible
pseudoallelism1938
pseudoallele1948
1948 E. B. Lewis in Genetics 33 113 The bithorax mutants, bx and bx3 (locus, 3–58·8), are pseudo-alleles of bithoraxoid-dominant, bxdD.
1975 V. Grant Genetics of Flowering Plants iv. 75 The pseudoalleles are so close on the genetic map that crossovers between them occur only very rarely.
2003 Mechanisms Developm. 120 340/2 Proving that these genes are true pseudoalleles (i.e. generated by whole genome duplication)..would be extremely difficult.
Derivatives
ˌpseudoaˈllelic adj. behaving as or consisting of pseudoalleles.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > [adjective] > changes or actions of genes or chromosomes > mutation > pseudoallele
pseudoallelic1948
1948 Science 17 Dec. 679/1 Though all the factors have essentially the same effect, they are..not allelic. But they show a pseudoallelic interaction.
1975 J. B. Jenkins Genetics ix. 388 Primarily as a result of the analysis of pseudoallelic series, the gene emerged conceptually as a unit of function, or cistron.
2001 Mechanisms Developm. 101 271/2 They are most likely pseudoallelic variants, which arose by an ancient tetraploidization event.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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n.1948