The Geographic Isolation of a Population from Other Members of the Species

question 23

Multiple Choice

The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes speciation.

• A)biogeographic
• B)sympatric
• C)punctuated
• D)allopatric

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Definitions:

Embryonic Layers

The three primary layers of cells (ectoderm, mesoderm, and endoderm) in an embryo that develop into different organs and tissues.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, which gives rise to the outer layer of skin, nails, hair, and nervous system.

Inner Layer

The deeper or internal part of something, often used in a metaphorical sense to describe the core aspects of concepts or objects.

Endoderm

The innermost layer of cells or tissue of an embryo in early development, giving rise to the lining of the digestive and respiratory systems.