Sentences with phrase «produced more male than female»

Through an unknown mechanism, the mixed pairs produced more male than female offspring, and males are more likely to survive.

Not exact matches

Active genes, i.e. those that produce a large amount of RNA, seem more likely to be retained than less active genes; and genes that are more active in males than in females also persist for longer.

In populations where females could choose their mate, males displayed more power and endurance when producing their love song than their counterparts that had evolved under enforced monogamy.

For many years, the hyenas have produced more male offspring than females.

Males produce more calls than their female counterparts, Širovi?

So even though male Neandertals and female modern humans probably hooked up more than once over the ages, they may have been unable to produce many healthy male babies (such as the reconstruction of this Neandertal boy from fossils from Gibraltar)-- and, thus, hastened the extinction of Neandertals.

For one thing, if a collared female breeds late in the season, choosing a pied male can actually be advantageous because the «heterospecific» pair will produce more fledglings than a pure collared pair would, owing to interspecies differences in peak performance timing.

Also, males that were more aggressive than their female partners, when paired, were more likely to mate and produce cubs than more - aggressive females paired with less - aggressive males.

Researchers have found that female false garden mantises (Pseudomantis albofimbriata, pictured) that were fed just a quarter of what others got actually produced more pheromones than well - fed females — and attracted almost twice the number of males.

«For example, we noted that males that had been bred for increased same - sex mounting behavior were less discriminating when given a choice between courting a male or a female in later tests, while their sisters laid more eggs and produced more offspring than before», says David Berger, Assistant Professor at the Department of Ecology and Genetics at Uppsala University and one of the researchers behind the study.

So when Drake and his colleagues measured the RNA levels — a direct link to how much of a gene is being produced — in the genes of 334 mice, he didn't expect to find more than a few variations that might help explain why males and females have such different rates of cardiovascular disease and diabetes or why they react differently to certain drugs.

In that sense, the female is acting in the best interest of her genes: A son will, on average, produce more grandchildren for her than would a daughter, because males have more opportunities to mate in a female - dominated population.

Female hoboes produce more venom than males.

If female fertility gene disruption occurred early in development rather than in the germline, the same system could produce a male - linked dominant sterile - daughter effect that would be less powerful but more readily modulated (Supplementary Fig. 10).

Females produce testosterone like 10 year old boys so putting on muscle is far more difficult than their male counterparts.

Testosterone is a hormone that the male and female body both produce, although men produce considerably more testosterone than women.

During a segment aired on The Doctors, the Oprah Winfrey / Dr. Phil McGraw produced daytime medical talk, a study was shown claiming that there are more transsexuals looking for female partners than there are males in the United States, but does this actually mean that women have a better chance at finding transsexual love?

In fact, males can father far more young than a female could ever produce in a lifetime.

Male cats, particularly unaltered ones, produce more allergens than female cats.

The tax on each male dog and each spayed female dog, of which the certificate of a veterinarian or the affidavit of the owner is produced, in this state shall be one dollar per year, and the tax on all other dogs in this state shall be three dollars per year, payable to the county clerk of the county in which the owner resides; provided, that any person or persons operating a licensed kennel of more than ten dogs in which all dogs kept by him or them are confined and not allowed to roam, shall pay a tax of ten dollars, which amount shall be the full amount of tax on all dogs kept by said person or persons as described above.

[21] More male pups are produced than female pups in years with warmer sea surface temperature in the northeastern Pacific Ocean.

Aluminium deficient goats produced significantly more male than female kids; kids weaning from their Al - deficient mother developed a characteristic weakness of the hind legs and co-ordination problems.