Fathering offspring is more than just a race to the egg
The chance of a male fathering offspring may not be a simple race to the egg, but is influenced by the length of the male's sperm, say scientists from the University of Sheffield.
I like bright butts – how male mantids locate females
Praying mantids are masters of camouflage, blending in with the background vegetation, at least to human eyes. Camouflage can be an effective protection from predators and an important concealment from approaching ...
Being lower in pecking order improves female tit birds' memory
When it comes to remembering where a tasty titbit was left, female great tit birds are miles ahead of their male counterparts. This ability might have evolved because the females come second when there's ...
Female pigs can recognise the sex of sperm and influence the sex of their offspring
(Phys.org) —Female pigs' reproductive systems recognise whether a sperm will produce a boy or a girl before it reaches and fertilises the egg, and their oviduct (fallopian tubes) change in response, according ...
Online students give instructors higher marks if they think instructors are men
A new study shows that college students in online courses give better evaluations to instructors they think are men - even when the instructor is actually a woman.
Flies with brothers make gentler lovers
Flies living with their brothers cause less harm to females during courting than those living with unrelated flies, say Oxford University scientists.
Genome study indicates peacock eyespots likely developed to impress females
Female color perception affects evolution of male plumage in birds
The expression of a gene involved in female birds' color vision is linked to the evolution of colorful plumage in males, reports a new study from the University of Chicago. The findings, published Nov. 26 ...
More women on corporate boards doesn't mean less risk
There is a popular notion abroad that women are not risk takers and their mere presence on a bank board will reduce risky strategies and behaviours. ...
Scientists find potential biological control for avocado-ravaging disease
University of Florida scientists believe they've found what could be the first biological control strategy against laurel wilt, a disease that threatens the state's $54 million-a-year avocado industry.
The female of the species is harder to please than the male
Female bats are fussier than males when it comes choosing where to eat in urban areas, according to new research from the University of Stirling.
Males produce faster sperm for sisters
(Phys.org) —Mating with relatives, or inbreeding, can be costly to both sexes, and in many species males and females avoid mating with siblings. However, the latest research adds a twist to this story ...
More than just X and Y: A new genetic basis for sex determination
Men and women differ in plenty of obvious ways, and scientists have long known that genetic differences buried deep within our DNA underlie these distinctions. In the past, most research has focused on understanding ...
Intimidating chimpanzee males are more likely to become fathers
In a long-term study of interactions between chimpanzees in the famous Gombe National Park in Tanzania, researchers have found that males who consistently bully females tend to father more babies with their ...