Why does a whale have pelvic bones even though they don’t have legs?

scientists say the gradual shrinkage of the whales' hind limbs over 15 million years was the result of slowly accumulated genetic changes that influenced the size of the limbs (they used to have legs)

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Explanation:

Whale pelvic bones evolved to help the them maneuver better during intercourse. They have very small pelvic bones compared to their body Scientists have discovered that the tiny bones may actually play a huge role in whale reproduction.

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.