Sentence examples for fertility variance from inspiring English sources

As a consequence, fixation of the allele coding for lower fertility variance reduces the intensity of genetic drift and facilitates adaptive evolution in future generations.

Similar as in the analysis within each fertility level, we fitted several variance co-variance models.

The former measure primarily reflects variance in fertility across lines, while the latter measure will be affected by the co-expression of the two parental haploid genomes.

Palucci et al. [ 4] estimated the dominance variance for fertility traits such as non-return rate (0.6% of total phenotypic variance) and calving to first service (7.3% of total phenotypic variance) in Canadian dairy cows.

In contrast to selection mediated by early survival, variation in the linear selection gradients were less explained by variance in fertility than by time alone (3% versus 8% and 2% versus 11%), indicating that temporal linear trends in the selection gradients were not accounted for by changes in the variance in relative fertility alone.

The variance in fertility considered in Gillespie's (1974 , 1975 1977) seminal articles had arbitrary causes and could have resulted from randomness at any stage of an individual's life history, such as its development, its fertility, or the survival of its offspring.

Females mated to large residual eyespan males laid significantly more fertile eggs than did females mated to small residual eyespan males (large = 199.83 ± 7.44, small = 172.07 ± 7.54, least squares mean ± s.e).. Thus, male eyespan predicted significantly more variance in fertility than body size alone.

Regression analysis revealed that age at first marriage, perceived ideal number of children, place of residence, literacy status, religion, mass media exposure, use of family planning methods, household headship, and experience of child death were the most important variables that explained the variance in fertility.