How Do Gene Knockout Studies Help to Identify the Contribution

Multiple Choice

How do gene knockout studies help to identify the contribution of specific genes to intelligence?

A) After removing or suppressing a portion of genetic material, scientists can look for changes in intelligence.
B) After inserting genetic material, scientists can see how intelligence has changed.
C) Scientists can rank animals in terms of intelligence, and then see how the most intelligent animals differ genetically from the least intelligent.
D) By allowing scientists to compare identical and fraternal twins.