Although birds move several kilometres during the dispersal period, the bulk of the non-breeding fraction is largely attached to the AFS just opened within this range [17].
With overlapping generations, only a fraction of the breeding population is replaced at every generation.
Food quality and quantity have been shown to accelerate rodent sexual maturation [ 7, 8], to increase the length of the breeding season [ 9, 10], the fraction of the population breeding [ 8- 10] and litter size [ 11, 12].
Therefore, we sampled a substantial fraction of the total estimated breeding population each year.
The figures of merit for the concept relate to the HLW burn-up fraction, neutron economy, and impact on tritium breeding.
Based on the relative fraction of a whale population that consists of breeding females, they could then estimate the total population.
Fraction diversity saved (DS) after five generations of breeding by OCS based on observed pedigrees gradually decreased with increasing percentages of wrong sires (WSI).
Genome sampling (drift) in breeding practice inevitably would contribute to genome stratification and spurious effects because only a fraction of the population is maintained for producing the next generation.
If two recessive genes are involved, then a much smaller fraction of the F2 population will have the EGMS trait (1/16 = 6.25%), thus making breeding much more cumbersome.
Figueiredo et al. (2008) reported that there are two breeding seasons per year off Portugal, from January to May and from August to December, with only a fraction of the population reproductively active at a time.
