Handedness and educational success: The hypothesis of a genetic balanced polymorphism for laterality and ability.
Reading and a balanced polymorphism for laterality and ability.
In other words, genetic polymorphism depicted in Figure lb favors habitat fidelity and habitat preference much in the same way as the balanced polymorphism [ILLUSTRATION FOR FIGURE 1a OMITTED] embedded in traditional models of sympatric speciation.
When most individuals carry allele a (random dispersal), the maintenance of the balanced polymorphism requires that
However, with mutation pressure included in the picture, there is no discontinuity in the strength of selection for habitat preference at f = 1, that is, at the point at which the condition for balanced polymorphism becomes satisfied.
She has used these data to support her genetic model of handedness, and to argue for a balanced polymorphism with a heterozygote advantage (Annett, 1985).
Annett seems to suggest that a balanced polymorphism leads to a situation in which the two alleles are of equal frequency (Annett, 1985, p.
Racial variability in the UDP-glucuronosyltransferase 1 (UGTIA1) promoter: a balanced polymorphism
for regulation of bilirubin metabolism?
mansoni populations from Guadeloupe maintain a balanced polymorphism
, "a crucial step of sympatric speciation" (Maynard Smith 1966, p.
The theory of a genetic balanced polymorphism with heterozygote advantage (BH + HA)
In support of this assertion it is said that 'Annett seems to suggest that a balanced polymorphism leads to a situation in which the two alleles are of equal frequency (Annett, 1985, p.