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A unique image, for the first time, has mapped organic compounds that are still surviving in a 50-million-year-old sample of reptile skin.

2011-03-23

 reptiles skin evolution fossil organic cloning tissue
Worms forced to reproduce asexually succumbed to a nasty bacterial infection and died. The researchers say the results are the most convincing evidence to date for a key theory in evolutionary biology. The theory holds that sex evolved because it lets organisms reshuffle their genes into new combinations to stay a step ahead of parasites.

2011-07-08

 worm sex reproduction evolution asexual cloning biology parasite resistance
Mating with Neanderthals and another ancient group called Denisovans introduced genes that help us cope with viruses to this day. Previous research had indicated that prehistoric interbreeding led to up to 4% of the modern human genome. The new work identifies stretches of DNA derived from our distant relatives.

2011-08-26

 Neanderthal Denisovan human evolution immunity interbreeding genetics cloning
A scientist who was involved in cloning Dolly the sheep 15 years ago has started work on a new technique to clone rare Scottish wildcats.

2011-08-25

 cloning cat wild Scotland extinction genetics

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