As a Patch of Scraped Skin Heals, the Cells Fill

question 57

Multiple Choice

As a patch of scraped skin heals, the cells fill in the injured area but do not grow beyond that. This is an example of

• A) density-independent inhibition.
• B) density-dependent inhibition.
• C) anchorage independence.
• D) growth factor inhibition.

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Definitions:

Genetic Differences

Variation in the DNA sequence among individuals of the same species or between different species.

Evolutionary Change

A process through which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Directional Selection

A mode of natural selection where an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time.

Selection Differential

The difference in a particular trait between the selected individuals for breeding and the general population, driving evolutionary changes.