In whales back leg bones are a vestigial structure. What does this mean?
The leg bones were never used.
The Whale's ancestor had legs.
The leg bones still have a use.
A vestigial structure refers to a body part or organ that has reduced in size or functionality over evolutionary time and no longer serves its original purpose. In the case of whale's back leg bones, it means that they were once fully functional legs in their ancestors but have now reduced in size and are no longer used for locomotion. Therefore, the correct interpretation of this statement is that the leg bones were used by their ancestors but are now vestigial and do not have a current use in the whales.
What is the answer out of the options I gave u
Based on the options you provided, the correct answer would be:
The Whale's ancestor had legs.