Researchers have discovered why courtship rituals – which can be all-consuming, demanding time and effort – might actually be worth it.
Attracting a mate – which can take significant effort, such as in a peacock’s show of feathers or the exhaustive rutting of stags – can produce benefits for a species in the long term, a study suggested.
Scientists have shown that animals and plants, which reproduce sexually are at a considerable advantage to those species – such as some insects and reptiles – that reproduce without a partner.
Researchers at the University of Edinburgh studied sexual reproduction in tiny fruit flies to learn more about how DNA is randomly shuffled when the genes of two parents combine to create a new individual.
They found that this recombination of genetic material allows for damaging elements of DNA – which might cause disease or other potential drawbacks – to be weeded out within a few generations.
Individuals who inherit healthy genes tend to flourish and pass on their DNA to the next generation, while weaker individuals are more likely to die without reproducing.