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Without the pelvis whales cannot reproduce

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Claim

Without the pelvis whales cannot reproduce. Therefore it is not vestigial.

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Responses

  1. The whale's pelvis is considered to be vestigial on account of how, in the ancestral whales, such as Rhodocetus kasrani, the pelvis was originally fused to the vertebrae, and was used to help support the weight of the internal organs, as well as to serve as an anchoring point for the hindlegs. That the modern whale's pelvis is still used for help in reproduction does not change the fact that it is vestigial.
  2. Vestigial does not mean, imply, nor infer "useless," or "without function."
  3. There is no evidence to suggest that the pelvis plays any vital role in whale reproduction, whether during copulation, or during pregnancy.
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