Analysis of the Small Subunit RRNAs from All Organisms in the Three

question 18

Multiple Choice

Analysis of the small subunit rRNAs from all organisms in the three current domains suggests that

• A)the eukaryotes arose from prokaryotes.
• B)the Archaea are more closely related to eukaryotes than prokaryotes.
• C)all modern and extinct organisms on earth arose from a common ancestor.
• D)the prokarytoes,Archaea,and eukaryotes are not related. Refer to "Systems of Presenting a Universal Tree of Life" for a discussion of the ssu rRNAs and their role in taxonomy.

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Definitions:

Family Size

The number of individuals in a household, encompassing all related and unrelated members.

Level of Significance

A threshold in hypothesis testing that determines whether an observed effect is considered statistically significant.

Explanatory Variables

are variables in a statistical model that are presumed to influence or cause changes in a dependent variable.

Significant Individually

Refers to the condition when an individual variable or factor is statistically significant on its own within a model or experiment.