The location of factor place allowing intrusion out of a newly arising sex-ratio driving X-chromosome
The location of factor place allowing intrusion out of a newly arising sex-ratio driving X-chromosome
I earliest made use of such recursions to select the standards to the intrusion of SR chromosome
To infer sperm competition ability, we consider only cages that were left for 3 or more days, where most or all females are multiply mated. We find that the proportion of wild-type offspring produced by females in cages where ST males competed with dark males does not differ significantly from 0.5 (0.54 ± 0.025; t260 = 1.6, p = 0.12; figure 4), indicating that ST and dark males perform equally in sperm competition. By contrast, the proportion of offspring produced by SR males when in competition with dark males is significantly lower than 0.50 (0.38 ± 0.02, t376 = ?5.6, p < 0.0001; figure 4), indicating that SR males perform poorly in sperm competition. Overall, SR males sire 30% fewer offspring than ST males when in sperm competition with dark males.
4. Concept
To determine whether the physical fitness effects we https://datingranking.net/tr/oasis-dating-inceleme/ have mentioned is actually enough to describe the lower regularity regarding SR found in new insane, i modelled the new development of SR chromosome inside the D. recens. Brand new model contributes jizz battle into the vintage brand of SR development , which have one or two extra presumptions you to definitely capture new details of the fresh new D. recens SR program. These presumptions tend to be done drive, in a fashion that SR-hit people produce no Y-results spunk, and you will done infertility of women homozygous for SR (statistically comparable to zero viability). New model is sold with around three parameters: f-brand new reduced the fresh new fecundity of heterozygous people, s-the brand new losing spunk aggressive function regarding SR boys and you may meters-the feminine numerous mating speed (0 ? (more…)