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The US Senate is reviewing a bill that would extend a ban on so-called three-parent embryos.

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image: FDA Considers Three-Parent IVF

FDA Considers Three-Parent IVF

By | October 17, 2013

The US regulatory agency will meet next week to discuss whether to allow human trials of a technique that combines the genetic information of three adults.

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image: X Marks the Spot for Sperm Production

X Marks the Spot for Sperm Production

By | July 21, 2013

A new genetic analysis suggests the human X chromosome evolves rapidly and plays a specialized role in sperm production.

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In Chapter 3, “From Mating to Conception,” author Robert Martin explores the question of why humans and other primates frequently engage in sexual intercourse when females are not fertile.

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image: Widening the Fertile Window

Widening the Fertile Window

By | July 1, 2013

Women may be able to store viable sperm for longer than a week, thus contributing to apparent variability in pregnancy lengths.

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