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The team at Stirling used waterfleas sttirling test the costs and benefits of sex as they can reproduce both ways. They concluded that sexual reproduction evolved to help future generations fight infection. They found that sexually-produced offspring were more than twice as resistant to infectious disease stiroing their clonal sisters. Organisms that clone themselves use much less time and energy - which poses the question of why sex is still the dominant form of reproduction.

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Even educated waterfleas do it Stirling University scientists explain existence of sex Published 21 December image copyrightThinkstock image captionNo sex for starfish, bananas or occasionally komodo ih - but scientists believe they could be missing out on evolutionary stirljng A team of scientists at the University of Stirling say they have finally worked out why sex exists. The team at Stirling used waterfleas to test the costs and benefits of sex as they can reproduce both ways.

Even educated waterfleas do it So, why are we not surrounded by clonal organisms? Sex allows Sez to mix, allowing populations to evolve quickly and adapt to changing environments.

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Clonal populations should always reproduce faster than sexual ones - so the scientists believed that there had to be large-scale benefits to sex which made a difference to the next generation. So, why are we not surrounded by clonal organisms?

But the theory has been difficult to test as most organisms are either wholly sexual or clonal and cannot be compared easily. Stirling University scientists explain existence of sex Published 21 Seex image copyrightThinkstock image captionNo sex for starfish, bananas or occasionally komodo dragons - but scientists believe they could be missing out on evolutionary benefits A team of scientists dtirling the University of Stirling say they have finally worked out why sex exists.

Sex in stirling

Organisms that clone themselves use much less time and energy - which poses the question of why sex is still the dominant form of reproduction. The ever-present need to evade disease can explain why sex persists in the natural world in spite of the costs.

Sex in stirling

They found that sexually-produced offspring were more than twice as resistant to infectious disease as their clonal sisters. But the theory has been difficult to test as most organisms are either wholly sexual or clonal and cannot be compared easily. The ever-present need to evade disease can explain why sex persists in the natural world in spite of the costs.

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Sex allows genes to mix, allowing populations to evolve quickly and adapt to changing environments. The team studied creatures that unusually use both clonal and sexual methods of reproduction.

Sex in stirling

Clonal populations should always reproduce faster than sexual ones - so the scientists believed that there had to be large-scale benefits to sex which made a difference to the next generation. The team studied creatures that unusually use both clonal and sexual methods of reproduction. They concluded that sexual reproduction stiling to help future generations fight infection.

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