Sex Talk Revelations of the Lonely Y Chromosome
(PhysOrg.com) -- In the week that the University of Leicester celebrates the 25th anniversary of the discovery of DNA fingerprinting (Thursday September 10) new findings from the world-renowned University of Leicester Department ...
Understanding bulls' gene-rich Y chromosomes may improve herd fertility
The Y chromosomes of cattle have more genes and are more active than the Y chromosomes of other primates, according to researchers.
Promiscuous females are trying to avoid selfish genes
So-called 'selfish genes' may make females more promiscuous and also lower male fertility.
Male competition over females: An evolutionary engine of genital evolution
When a female mates with several males, these will compete over the fertilization her eggs. This is an important evolutionary force that has led to the evolution of a diversity of male sexual organ morphologies. ...
Men can rest easy -- sex chromosomes are here to stay
Fears that sex-linked chromosomes, such as the male Y chromosome, are doomed to extinction have been refuted in a new genetic study which examines the sex chromosomes of chickens.
Crickets show path to chirpier sperm
New research suggests that men are what they eat, at least when it comes to reproductive health.
Skeleton regulates male fertility
Researchers at Columbia University Medical Center have discovered that the skeleton acts as a regulator of fertility in male mice through a hormone released by bone, known as osteocalcin.
Good males are bad fathers
Contrary to predictions, males of high genetic quality are not very successful when it comes to fertilizing eggs. A new study on seed beetles by Swedish and Danish scientists Göran Arnqvist and Trine Bilde shows that when ...
Laptops Linked to Male Infertility
While fatherhood might be far from the minds of most young men, behavior patterns they establish early on may impact their ability to become a dad later in life. Excessive laptop use tops this list of liabilities, ...
Study links water pollution with declining male fertility
New research strengthens the link between water pollution and rising male fertility problems. The study, by Brunel University, the Universities of Exeter and Reading and the Centre for Ecology & Hydrology, shows for the first ...
Male bushcrickets are in charge when it comes to sex
All a question of timing: When bushcrickets mate, the male attaches a sticky package, the so-called spermatophore, to the female's abdomen. Alongside the sperm themselves, this 'bridal present' consists of ...
Chickens eject sperm from males they don't fancy
New research finds that even though hens aren't terribly picky about their mates, they are picky about whose sperm makes it to the egg.
UCLA lens-free telemedicine microscope adds male fertility testing to its bag of tricks
Using holographic imaging system, the microscope can produce phase and amplitude images of semen samples in the field and identify which are moving and which are immotile.
Male sex hormones in ovaries essential for female fertility
Male sex hormones, such as testosterone, have well defined roles in male reproduction and prostate cancer. What may surprise many is that they also play an important role in female fertility. A new study finds that the presence ...