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.

reproduction
For Mates to Fuse Bodies, Some Anglerfish Have Lost Immune Genes
For Mates to Fuse Bodies, Some Anglerfish Have Lost Immune Genes
Katarina Zimmer | Jul 30, 2020
In most vertebrates, the absence of adaptive immunity would be catastrophic, but in some deep-sea angler fish species, it enables their “wild” and “wacky” mating habits.
Image of the Day: Filament Networks
Image of the Day: Filament Networks
Amy Schleunes | Mar 11, 2020
Fossils from Newfoundland, Canada, reveal the extensive connections that existed among Earth’s earliest, sea-dwelling animals.
Swamp Wallabies Can Have Two Separate Pregnancies at Once
Swamp Wallabies Can Have Two Separate Pregnancies at Once
Lisa Winter | Mar 3, 2020
Before the joey is born, another pregnancy has already started.
Image of the Day: Impaired Meiosis
Image of the Day: Impaired Meiosis
Amy Schleunes | Feb 7, 2020
A phthalate commonly found in shampoos, cosmetics, and cleaning products disrupts reproduction in worms.
Selecting Embryos for IQ, Height Not Currently Practical: Study
Selecting Embryos for IQ, Height Not Currently Practical: Study
Shawna Williams | Nov 21, 2019
Building simulations based on real genetic data, researchers conclude Gattaca-like tactics to choose the traits of future offspring would yield little payoff.
Sex Promotes Lasting Memories in Female Flies
Sex Promotes Lasting Memories in Female Flies
Ruth Williams | Nov 20, 2019
A protein present in the ejaculate of male fruit flies activates long-term memory formation in the brains of their female partners.
Rabbit Study May Hint at Origin of Female Orgasm in Humans
Rabbit Study May Hint at Origin of Female Orgasm in Humans
Catherine Offord | Oct 1, 2019
It could be a throwback to a mechanism that induces ovulation during sex, researchers propose, but not everyone thinks the results can be extrapolated to people.
Image of the Day: Synchronous Spawning
Image of the Day: Synchronous Spawning
Emily Makowski | Sep 9, 2019
Groups of corals release all of their eggs and sperm once a year, but the timing of their spawning is under threat from climate change.
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.