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प्रश्न
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
अति संक्षिप्त उत्तर
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उत्तर
- Gill-clefts develop in the embryos of all land vertebrates but are not present in the adult.
- Embryos of all vertebrates develop a notochord, which is replaced by the vertebral column in adults.
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