In humans, an egg develops into a male offspring if it A). contains a Y chromosome and is fertilized by a sperm containing a Y chromosome. B). contains a Y chromosome and is fertilized by a sperm containing an X chromosome. C). contains an X chromosome and is fertilized by a sperm containing a Y chromosome. D). contains an X chromosome and is fertilized by a sperm containing an X chromosome.

C. Contains an X chromosome and is fertilized by sperm containing a y.

Explanation:

The male genotype = XY the female = XX

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme