When a Feature of Size Is Specified as a Datum

question 4

Essay

When a feature of size is specified as a datum feature, and referenced in a feature control frame, what are the two conditions that exist?

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Definitions:

Selective Gene Expression

This describes the process by which certain genes are activated to produce a specific set of proteins in different cell types, conditions, or stages of development.

Cell Differentiation

The process by which a less specialized cell becomes a more specialized cell type, crucial in development and specialization of functions.

Embryo

In animals, a developing individual from first cleavage until hatching or birth; in humans, usually refers to an individual during weeks 2 to 8 of development.