What is an enzyme controlled biochemical pathway?

Explanation:

A biochemical pathway (also called a metabolic pathway) is a series of enzyme-mediated reactions where the product of one reaction is used as the substrate in the next. Each enzymes is coded by a different gene. ... A mutation within a gene will often result in a non-functional enzyme.

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the answer is third world countries, take for instance china, they restricted each family with only one child,

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answer; a male inherits only one allele of the x-linked gene controlling hair color;