Discovery of a genetic sex marker in sturgeon

Scientists have discovered a molecular marker for sex determination in sturgeon within the international project STURGEoNOMICS, led by the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB). This discovery ...

The birth of a male sex chromosome in Atlantic herring

The evolution of sex chromosomes is of crucial importance in biology as it stabilizes the mechanism underlying sex determination and usually results in an equal sex ratio. An international team of scientists, led by researchers ...

The surprising structure of a shrub willow sex chromosome

Sex in plants can be befuddling. Most species are hermaphrodites, expressing both male and female gametes in one individual. But some, including shrub willow Salix purpurea, employ the evolutionary strategy we are far more ...

The paradox of different house flies with few genetic differences

In the steamy, often filthy world of the humble house fly, (the Musca domestica) clear division exists among the males of the species. Though not a civil war, there are differences, to be sure, between males in the north ...

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