What is the genetic make-up of an entire population?Group of answer choicesPopulationMacroevolutionGene poolMicroevolution

The genetic make-up of an entire population is referred to as the Gene pool. The gene pool encompasses all the alleles of all the genes present in that population, representing the genetic diversity that is available for selection and evolution.

Explanation of Other Choices:

1. Population: This refers to a group of individuals of the same species living in a specific area and capable of interbreeding. However, it does not specifically pertain to the genetic composition.

2. Macroevolution: This term describes large-scale evolutionary changes that occur over geologic time, resulting in the emergence of new species and higher taxonomic groups. It is a broader concept focused on evolution over long periods rather than the genetic makeup of a specific population.

3. Microevolution: This term refers to smaller evolutionary changes within a species or population, often due to small-scale processes such as natural selection, mutation, gene flow, and genetic drift. While it deals with genetic changes, it does not encapsulate the entirety of a population's genetic structure.

Final Answer:

Gene pool.