Multiple choice

How can we justify the fact that, contrary to Gloger's Rule, millions of dark complexioned people live in temperate and even Arctic latitudes today?

  1. When a group of light skin people migrates into far northern regions, natural selection makes their skin dark only in few generations.

  2. Gloger's Rule is a hypothesis.

  3. Human population have been very active in moving around the globe in recent years.

  4. When a group of light skin people migrates into far northern regions, natural selection makes their skin dark in many generations.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Today the rate of evolutionary change for skin colour is much slower than the homogenizing effect of human migration. This process of interregional movement of societies has been accelerating, particularly since the time of Columbus.

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