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Curious Kids: what came first, the chicken or the egg?

By Ellen K. Mather, Adjunct Associate Lecturer in Palaeontology, Flinders University

What came first, the chicken or the egg? — Grace, age 12, Melbourne

Hi Grace!

Thanks for this great question. It’s an age-old dilemma that has left many people scratching their heads.

From an evolutionary perspective, both answers could be considered true! It all depends on how you interpret the question.

The case for the egg

When the first vertebrates – that is, the first animals with backbones…

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