These results indicate offspring mortality differences between females and that the differences between small, large and sperm competition trials were not consistent across all 10 male groups (male combinations).
In mammals that produce multiple offspring, the differences can lead to competition for resources in the womb.
We propose that behavioural or physiological maternal effects may be shaping offspring temperament differences related to disturbance.
This introduces the evolutionary process as the consequence of three components that structure the lesson: replication (the inheritance of parental traits by offspring), variation (differences between parent and offspring and among siblings), and selection (nonrandom differential survival of offspring).
A post-weaning HF diet significantly increased progesterone concentrations in Cont and UN animals (p<0.05, Figure 4C), although in UNL offspring these differences did not reach statistical significance.
We also minimized the biasing effect of offspring age differences on yolk reserves by sampling all the fish at the same time at the beginning of the yolk sac stage, when all the offspring had hatched.
Sex-ratio (SR) distorters are genes that cause an unequal representation of the sex chromosomes among the offspring through differences in number, quality or function of X- and Y-bearing spermatozoa.
To know if GFP labelling of X. nematophila, employed to discriminate the two nematode species within the global offspring, triggered differences on the progress of competition between nematodes, the data obtained with or without GFP labelling of X. nematophila in each competition situation were compared with a Mann Withney test.
As such, for the racial immigrant and his offspring, racial difference need be mitigated whenever possible, if only to lubricate the cogs of class mobility: nearer to whiteness, nearer to wealth.
Tests on mice exposed to low levels of e-cigarette vapour over the course of their pregnancy and during the first few weeks in the lives of their offspring, found significant differences in brain activity, sperm counts and behaviour of their progeny compared to unexposed mice, Professor Zelikoff told the American Association for the Advancement of Science in Washington.
