A Desert Is an Area in Which

question 32

Multiple Choice

A desert is an area in which:

• A) potential precipitation is four times greater than evaporation.
• B) potential evaporation is four times greater than precipitation.
• C) the total precipitation is less than 25 millimeters per year.
• D) evaporation is greater than precipitation.

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Definitions:

Ancestral Allele

The original version of a gene that existed in a common ancestor of a species or a group of species.

EPAS1 Allele

A genetic variant associated with adaptation to high-altitude environments, often studied in populations living in the Himalayas.

Denisovan Genome

The genetic blueprint of the Denisovans, an extinct species of archaic humans, obtained from ancient DNA samples.

Introgression

The transfer of genetic material from one species to another through hybridization and backcrossing, leading to the incorporation of foreign genes into a population.