Question

The gene which codes for enzyme β-galactosidase ______.

Options

• gene Y

• gene A

• gene Z

• gene B

Answer 1

The gene codes for enzyme β-galactosidase gene Z.

Explanation:

Lactose is broken down into glucose and galactose by the enzyme β-galactosidase, which is encoded by the gene Z, which has 3063 base pairs.