Related topics: eggs · fertilizer · genes · infertility · females

Balance between proteins keeps sperm swimming swiftly

Sperm must swim swiftly to an egg in order to fertilize it, and so they have evolved hydrodynamic shapes. Most of the space in the head of sperm cells is taken up by the DNA they carry, so the cells coil up their DNA super ...

Third massive whale in a month beaches itself, dies in Bali

A 17-meter-long (56-foot-long) sperm whale died after washing up on a beach in Bali, a conservation official said Sunday, making it the third whale that beached itself on the Indonesian island in just a little over a week.

Massive sperm whale beaches itself, dies in Bali

Indonesian animal experts were preparing Thursday to conduct an autopsy on an 18-metre (59-foot) whale that died after washing up on a beach in Bali, conservation officials said.

Male beetles neglect their genomes when competing for females

Male beetles face a trade-off between competing with other males for mating opportunities and repairing damage to their sperm DNA, according to a study published April 4 in the open access journal PLOS Biology by Mareike ...

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