Carlos is collecting data about the length of earthworms in his backyard. The shortest worm he found is 4 inches long; the longest worm is 8 inches long. If most of the worms are either short or long, which type of distribution is displayed in the population?

DARWIN’S THEORY OF NATURAL SELECTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	directional
B	disruptive
C	stabilizing

Explanation:

Detailed explanation-1: -The correct answer is B. Disruptive.

Detailed explanation-2: -Individuals of a population can be distributed in one of three basic patterns: they can be more or less equally spaced apart (uniform dispersion), dispersed randomly with no predictable pattern (random dispersion), or clustered in groups (clumped dispersion).

Detailed explanation-3: -Our analyses reveal that the ancestor of all living earthworms probably lived over 209 million years ago, making earthworms about as old as mammals and dinosaurs.

Detailed explanation-4: -Which statement about the giraffes explains their evolution based on Charles Darwin’s main points? Long necks were a random genetic change and resulted in the gradual increase of organisms with long necks.

Detailed explanation-5: -The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods.

There is 1 question to complete.

AP BIOLOGY

EVOLUTION

DARWIN’S THEORY OF NATURAL SELECTION