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6 November, 21:41

Which of these characteristics first developed in reptiles? amniotic egg four-legged body animals with lungs. skull and vertebral column scales on skin?

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  1. 6 November, 22:17
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    Am amniotic egg is first developed in the reptiles.

    The membrane and shell make a protective membrane that can provide a safe environment for the cells to divide, and embryo to develop. Animals having an amniotic shell are called as amniotes. The other body parts develop later on.
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