Why do we need two sexes?

“There is no greater mystery in the whole world, as it seems to me, than the existence of the sexes, – more especially since the discovery of Parthenogenesis. The origination of the sexes seems beyond all speculation.”

Charles Darwin: Letter to J. S. Henslow, 16 July 1860

It was an honour and a pleasure to speak on this topic, on August 28 2015, at the Capri Workshop of the European Society of Human Reproduction and Embryology.

My talk presented a possible answer and experimental results that are consistent with it.

There is an outline and links to the primary publications on my Research Web page, in the section Mitochondria, ageing, separate sexes.

Participation in the workshop was a complete pleasure. There was great diversity in the topics considered, and in research reported.

The hospitality of Prof Piergiorgio Crosignani was extraordinary. I am most grateful.

Capri is utterly beautiful. I’d love to return one day, with family, and time to explore.

Capri harbour from the quayside, waiting for return to journey to Naples.
Capri harbour from the quayside early on Sunday morning, waiting for return to journey to Naples.
Evening view South from clifftop near Anacapri, near Parco Filosofico.
Evening view South from clifftop near Anacapri, near Parco Filosofico.

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