How Many of the Following Statements Concerning the Loss of Hind

question 83

Multiple Choice

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.

• A)Only one statement is true.
• B)Two statements are true.
• C)Three statements are true.
• D)Four statements are true.
• E)All five statements are true.

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Definitions:

Operant Model

A behavioral model focusing on the modification of observable behaviors through reinforcement and punishment.

Immediate Consequences

The direct and instant outcomes or results that follow a specific behavior or action.

Reactive Effects

Changes in behavior that occur as a result of being observed or knowing that one is being studied, often considered in psychological and social research.

Talk-Outs

Interventions or strategies in which individuals vocalize thoughts, feelings, or conflicts as a means to resolve issues or reduce emotional distress.