It is a question that has scrambled the brains of everyone from scholars to schoolchildren - and now scientists may just have provided an answer to this most baffling of evolutionary conundrums.A study has now given free range to a new theory on the chicken-and-egg question after discovering that early ancestors of modern birds and reptiles may have given birth to live young rather than laying hard-shelled eggs.In evolutionary terms, eggs were being laid by the chicken's distant dinosaur ancestors millions of years before the first chickens evolved.
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