On What Basis Was Life Divided into Three Domains

question 64

Multiple Choice

On what basis was life divided into three domains?

• A) rRNA sequence data
• B) cytochrome c sequence data
• C) mitochondrial DNA sequence data
• D) the presence or absence of a nucleus and organelles
• E) presence or absence of mammary glands

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Definitions:

Ciliary Ring

A structure in the eye made up of muscles that control the shape of the lens for focusing light on the retina.

Vitreous Humor

The clear gel that fills the space between the lens and the retina of the eyeball, helping maintain its shape and allowing light to pass through.

Fibrous Tunic

Outer layer of the eye; composed of the sclera and the cornea.

Transparent

Allowing light to pass through so that objects behind can be distinctly seen; clear; see-through.