What General Effect Does Random Genetic Drift Have on Populations

question 23

Multiple Choice

What general effect does random genetic drift have on populations?
1) It reduces the dominant homozygosity.
2) It reduces the heterozgosity.
3) It reduces the recessive homozygosity.

• A) 1
• B) 2
• C) 3
• D) 1 and 3
• E) All of these

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Definitions:

Epiblast

A layer of cells in the early embryo from which all the various tissues and organs of the body will eventually develop.

Neural Plate

An early embryonic structure that gives rise to the central nervous system, including the brain and spinal cord, through the process of neurulation.

Notochord

A flexible rod made of a material similar to cartilage that provides support in the embryonic stages of all chordates.

Neural Crest

A population of cells that arise from the embryonic ectoderm and migrate to form various structures, including peripheral nerves, melanocytes, and facial cartilage.