Skin Colour in Humans Is Caused by Polygenic Inheritance

question 42

Multiple Choice

Skin colour in humans is caused by polygenic inheritance. Which one of the following statements is implied by this form of inheritance?

• A) The skin colour of children will always be identical to one parent or the other.
• B) The skin colour of children will always be intermediate to that of their parents.
• C) The skin colour of children will most often be identical to that of one of their parents, but sometimes not.
• D) The skin colour of children will most often be intermediate to that of their parents, but sometimes not.

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Definitions:

Pebble's Particle Size

The measure of the grain size of pebbles, generally used in geology to classify sediment grains between 2 and 64 millimeters in diameter.

Increases

An upward trend or a rise in quantity, size, number, or degree in a measurable process or variable.

Easily Weathered

Referring to materials or minerals that break down or decompose quickly when exposed to weathering processes such as rain, wind, or temperature changes.

Closely Spaced Fractures

Multiple fractures within a rock mass that are located relatively close to each other, often affecting the rock's structural integrity and permeability.