Answer:
The false statement is "A single gene can only influence a single trait".
Explanation:
Pleiotropy is the ability of a gene to influence or regulate more than one character or trait. A single gene can easily control or affect one or more than one character in an individual.
One gene-one enzyme hypothesis, in contrast, states that one gene only affects or influences only one metabolic process at a time. But it is proven that one gene can affect more than one trait.
Thus, the correct answer is "A single gene can only influence a single trait".
