Fisher's Sex Ratio Model Was Put to Test in a Species

question 4

Multiple Choice

Fisher's sex ratio model was put to test in a species of blue moon butterflies on the Samoan islands of Upolu and Savaii,where which of the following conditions existed?

• A)The male:female sex ratio was the expected 1:1.
• B)99% of the butterflies were female and only 1% were male.
• C)Only the males were infected with the Wolbachia bacterium.
• D)A and C

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Definitions:

Biological Magnification

The process by which the concentration of toxic substances increases in each successive link in the food chain.

Bioaccumulation

The concentration of a chemical pollutant in the tissues of an organism rises over the course of the organism’s lifetime.

Greenhouse Effect

Warming of Earth’s lower atmosphere and surface as a result of heat trapped by greenhouse gases.