The largest-ever study of over 2.6 million zoo birth records reveals skewed sex ratios in endangered species, from lemurs to elephants. The international team of scientists behind the study emphasizes ...
New research is cutting male mammals down to size. While we may think of hulking elephant seal bulls or huge stags, these males appear to be the exception, rather than the rule. A new analysis of more ...
In a striking experiment, researchers in Japan used cells from male mice to create not only male clones, but fertile female ...
The success of this experiment suggests that conservationists could potentially apply this method to critically endangered ...
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Dual-sex cloning from male mice DNA

A cloning technique has been developed that creates both female and male mice from the somatic cell genome of a single male ...
The largest-ever study of over 2.6 million zoo birth records reveals skewed sex ratios in endangered species, from lemurs to elephants. The international team of scientists behind the study emphasise ...
We take it for granted that humans find it more difficult to conceive as they grow older. But our recent study, which analysed data from 157 animal species, found that male reproductive ageing seems ...
Is it true that male animals are dominant over females? Previous studies have often found male-biased power in primates and other mammals. A new study, investigating physical encounters between ...