How many of the following statements concerning the loss of hind limbs during whale evolution are true? 1. It is well documented by a series of transitional fossils.
2. It explains why modern whales have vestigial pelvic girdles.
3. It involved changes in the sequence or expression of Hox genes.
4. It is an example of macroevolution.
5. It, and the loss of limbs by snakes, are examples of similar adaptations to a similar environment.

Question

Quizplus · Accepted Answer

Statements 1, 2, 3, and 4 are true. The loss of hind limbs in whales is well documented by fossils, explains vestigial pelvic girdles, involved genetic changes, and is an example of macroevolution. However, statement 5 is false because the loss of limbs in whales and snakes occurred due to different evolutionary pressures and environments.

How Many of the Following Statements Concerning the Loss of Hind