Women’s Cervical Mucus Prefers Some Sperm Over Others 
Women’s Cervical Mucus Prefers Some Sperm Over Others 
In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.
Women’s Cervical Mucus Prefers Some Sperm Over Others 
Women’s Cervical Mucus Prefers Some Sperm Over Others 

In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.

In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.

sexual reproduction
Image of the Day: Spider Sex
Image of the Day: Spider Sex
Nicoletta Lanese | Aug 26, 2019
Funnel-web spiders change the timing of their distinct courtship behavior depending on what microbes they’re carrying.
Image of the Day: Self-Insemination
Image of the Day: Self-Insemination
Carolyn Wilke | Feb 1, 2019
Videos reveal how a female squid fertilizes her eggs—one at a time and without spilling much stored sperm.
Male Fruit Flies Take Pleasure in Having Sex
Male Fruit Flies Take Pleasure in Having Sex
Jim Daley | Apr 20, 2018
Sex-deprived males seek out alcohol.
Why Paternal Mitochondria Aren’t Passed On to Offspring
Why Paternal Mitochondria Aren’t Passed On to Offspring
Tanya Lewis | Jun 24, 2016
Researchers identify a C. elegans gene that leads the organelles to self-destruct in sperm following fertilization of an egg.
Review: <em>The End of Sex</em>
Review: The End of Sex
Tanya Lewis | May 13, 2016
Legal expert Henry Greely envisions a world in which advances in biotechnology obviate the need for sexual reproduction as we know it.
Laugh, Then Think: The Ig Nobels
Laugh, Then Think: The Ig Nobels
Karen Zusi | Sep 21, 2015
This year’s awards honor research on bee stings, appendicitis, kissing, and more.
Fending Off Infection in Future Generations
Fending Off Infection in Future Generations
Jef Akst | Aug 17, 2015
Female fruit flies challenged with infection during their lifetimes have offspring with greater genetic diversity.
How to Make a New Species
How to Make a New Species
Ruth Williams | Jun 30, 2015
Scientists mutate a mating pheromone and its corresponding receptor in yeast to promote speciation.
Drug for Low Sex Drive in Women?
Drug for Low Sex Drive in Women?
Jef Akst | Jun 8, 2015
A federal advisory panel supports the US Food and Drug Administration’s approval of the first drug for female sexual dysfunction.