How Is Human Variation, Such as Skin Color, Distributed Across

question 59

Multiple Choice

How is human variation, such as skin color, distributed across the species?​

• A)​without variation across the species
• B)​in a homogeneous fashion
• C)​in a continuous fashion
• D)​in a punctuated fashion

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Definitions:

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the formation of the nervous system and the skin epidermis.

Germ Layer

One of the three primary layers of cells (ectoderm, mesoderm, endoderm) in the early embryo from which all the organs and tissues of the body eventually develop.

Excretory System

A system of organs responsible for the removal of waste products and excess substances from an organism's body.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the epidermis and nervous system among others.