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Duplicate genes help animals resolve sexual conflict

Duplicate copies of a gene shared by male and female fruit flies have evolved to resolve competing demands between the sexes. New genetic analysis by researchers at the University of Chicago describes how these copies have ...

Male spiders show their sensitive side

The sensory capacity of male spiders during mating may be higher than previously thought, a study in the open access journal Frontiers in Zoology suggests.

New species take longer to arise in the Amazon

Amazonia is home to the greatest number of species on earth, many now threatened, but a new study published October 22 in the open-access journal PLOS Biology by Jason Weir from the University of Toronto and Trevor Price ...

Genes linked to sex ratio and male fertility in mice

One of the more recent trends among parents-to-be is the so-called gender reveal, a party complete with pink or blue cake to answer the burning question, "Is it a boy or girl?" After all, it's presumed that there's a 50-50 ...

Male and female mice have different brain cells

Caltech researchers have discovered rare brain cell types that are unique to male mice and other types that are unique to female mice. These sex-specific cells were found in a region of the brain that governs both aggression ...

The dark giraffe, the new dark horse

Darker male giraffes have been found to be more solitary and less social than their lighter-colored counterparts, according to new research from The University of Queensland.

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