Genes Do Not Control Growth Directly

question 84

Multiple Choice

Genes do not control growth directly.Instead,genes regulate physical development by means of

• A) chromosomal blueprints.
• B) cephalocaudal directives.
• C) proximodistal directives.
• D) neural and hormonal activity.

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Definitions:

Allopatric Speciation

The process of speciation that occurs when biological populations of the same species become isolated from each other to an extent that prevents or interferes with genetic interchange.

Gene Flow

Gene flow is the transfer of genetic variation from one population to another, which can increase genetic diversity in the receiving population.

Divergence

The evolution of different forms or species from a common ancestor, involving the accumulation of genetic differences that can lead to the formation of new species.

Reproductive Isolation

A set of conditions, mechanisms, or behaviors that prevent members of different species or populations from mating and producing fertile offspring.