1. In Dawkins' metaphor about DNA, how does he describe the creation of new DNA by sexual reproduction?
(a) Two bookshelves are combined into one.
(b) Pages are torn out of different books and put together.
(c) Two books are combined into one two-volume work.
(d) Books from different shelves are mixed together on a new shelf.

2. What does Dawkins say points to the idea that all living things come from the same types of early molecules?
(a) All life forms are made from DNA molecules.
(b) All life forms have basic cell structures.
(c) All life forms are based on carbon.
(d) All life forms have similar pH balances.

3. If two genes normally cooperate, what happens when one gene is missing?
(a) The other gene still causes the same total result.
(b) The other gene still has an effect, but the total result is not the same.
(c) The other gene still causes the same total result but intermittently.
(d) The other gene no longer has any effect.

4. Does the author believe that genetically inherited traits cannot be changed?
(a) No, he believes that genetically inherited traits are only vague predispositions that are easily and commonly changed.
(b) No, he does not believe genetically inherited traits are impossible to change.
(c) Yes, he believes genetically inherited traits cover all behavior and are unchangeable.
(d) Yes, he believes that genetically inherited traits are unchangeable, but they don't govern all behavior.

5. What is the smallest unit that is reproduced and carried on through natural selection?
(a) A gene.
(b) A cell.
(c) A chromosome.
(d) A DNA strand.