The Area North of 66½°N Is in Darkness When the Sun

question 79

Multiple Choice

The area north of 66½°N is in darkness when the Sun is directly ________.

• A) over the Equator
• B) over 23½°N
• C) over 23½°S
• D) at the Arctic Circle
• E) at the Antarctic Circle

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Definitions:

Shared Characteristics

Traits or features that are common across a group of organisms, indicating a degree of genetic, structural, or functional similarity.

Hardy-Weinberg Equilibrium

Hardy-Weinberg Equilibrium is a principle stating that genetic variant frequencies in a large, interbreeding population remain constant from one generation to the next, in the absence of other evolutionary influences.

Homozygous Dominant

An organism that carries two dominant alleles for a particular gene, expressing the dominant phenotype.

Stabilizing Selection

A type of natural selection that favors the average individuals in a population and reduces variation around the mean phenotype.