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image: Image of the Day: Teeth

Image of the Day: Teeth

By | July 3, 2017

Once mated, female cabbage white butterflies (Pieris rapae) use their "vagina dentata" to rip through the hard encasing of a male’s ejaculated spermatophore. 

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image: Infographic: Plastics’ Effects

Infographic: Plastics’ Effects

By | June 1, 2017

Lab studies suggest that plastic pollutants in the environment could have detrimental effects on animals’ physiology.

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Researchers have constructed prosthetic female reproductive organs and implanted them in mice, some of which conceived and gave birth to live young.

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image: Ancient Marine Reptile Birthed Live Young

Ancient Marine Reptile Birthed Live Young

By | February 15, 2017

Researchers have described a pregnant Dinochephalosaurus, and the fossilized remains suggest that the massive animal did not lay eggs, as previously suspected.

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image: Eel-ucidating A Fishy Mystery

Eel-ucidating A Fishy Mystery

By | January 1, 2017

Researchers are using high-tech solutions to bring the lifecycle of the European eel into sharper focus.

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image: Q&A: Zika Damages Mouse Testes, Reduces Fertility

Q&A: Zika Damages Mouse Testes, Reduces Fertility

By | October 31, 2016

Michael Diamond of the Washington University School of Medicine in St. Louis and colleagues tracked the virus in the male mouse reproductive tract over several weeks.

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image: Why Female Orgasm Evolved

Why Female Orgasm Evolved

By | August 4, 2016

The phenomenon may have arisen to trigger hormonal surges and drive ovulation, scientists propose.

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image: Guppie Porn

Guppie Porn

By | August 1, 2016

Biologist Carin Bondar delivers a TED talk about the wilder side of sex.

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image: Embryo Watch

Embryo Watch

By | May 5, 2016

A new culture system allows researchers to track the development of human embryos in vitro for nearly two weeks.

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image: Meiotic Mysteries

Meiotic Mysteries

By | May 1, 2016

Understanding why so many human oocytes contain the wrong number of chromosomes

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