In the Context of Epidemiology, What Does It Mean to Describe

question 20

Multiple Choice

In the context of epidemiology, what does it mean to describe the world as "smaller"?

• A) The size of Earth has been shrinking since it formed 4.56 billion years ago.
• B) The size of the world's population is larger than Earth can sustain.
• C) Humans can travel from continent to continent within hours or days.
• D) The continents are shifting in a way to make the land on Earth smaller.

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Definitions:

Excess Fitness

The additional reproductive success of individuals with a certain genotype compared to the average reproductive success in the population.

Population Structure

The composition and spatial distribution of genetic variation within and between populations, influenced by factors like migration, mating patterns, and natural selection.

Evolution

The method through which various types of living beings are believed to have evolved and branched out from ancestral forms throughout Earth's history.

Allele Frequencies

Allele frequencies encompass the proportion of different versions of a gene present within a population's gene pool.