neutral allele

neutral allele

a form of a gene that when carried in an organism in no way alters the FITNESS of that individual to survive and reproduce.
References in periodicals archive ?
Testing the constant-rate neutral allele model with protein sequence data.
This cyclic variation in population size decreases the effective population size (Crow and Kimura 1970), and subsequently leads to a reduction in neutral allele diversity.
The shallowness of clines near the center of the zone produces a minor barrier to introgression of an average neutral allele crossing the zone.
1983) have characterized the strength of the barrier using the rate of convergence of the neutral allele frequency to an equilibrium value.
When a neutral allele was introduced, no difference in gamete loads was detected.
These changes should require up to 2N generations for a neutral allele (Hartl and Clark 1989, p.
No restriction is placed on the sign of s, and thus advantageous alleles can be modeled or alternatively, k - 1 deleterious alleles with one neutral allele could be modeled.
1996) used computer simulation for comparing the retention of neutral alleles when forming core collections using nonmarker-based random sampling and stratified random sampling strategies versus the M strategy using genetic markers.
Sampling theory for neutral alleles in a varying environment.
1995) indicate that according to the theory of selectively neutral alleles, a core subset consisting of 10% of the entire collection would retain at least 70% of the alleles of the core collection.
When morph frequencies are relatively constant across populations, it becomes more difficult to differentiate between uniform selection acting over a wide area and the migration of effectively neutral alleles between populations.
This phenomenon is akin to what has been called `hitchhiking,' the fixation of selectively neutral alleles because of their linkage to favorable mutations (Maynard Smith and Haigh, 1974; Charlesworth and Guttman, 1996), but extended to non-selectively neutral alleles.