The term evolution is used to describe

A. heritable changes in characteristics of a population from one generation to the next.
B. any change in an individual that can be observed.
C. changes in the number of individuals in a population due to mating.
D. the ability of an individual organism to pass on what it has learned, through experience, to the next generation.
E. any change in an individual organism that occurs in somatic cells.


A. heritable changes in characteristics of a population from one generation to the next.

Biology & Microbiology

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Why do most of the flowers in a temperate deciduous forest bloom in the spring?

A) The leaves of deciduous trees do not block the light in the spring; therefore, sunlight reaches the forest floor. B) The largest number of insect pollinators is available in the spring. C) In the spring, the trees do not block the wind and thus do not prevent wind pollination. D) The spring is the dry season; most of the rain falls during the cool, wet winters. E) Nutrients are most available in the spring.

Biology & Microbiology

Some scientists suggest that organic molecules were introduced into Earth's atmosphere when ________ crashed into Earth

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Biology & Microbiology

Below is the result of a study conducted by Hughes et al. What was the primary purpose of this study?

a. to examine how many times eusociality evolved independently in the hymenoptera b. to study the evolution of polyandry in the hymenoptera c. to test whether eusociality can be maintained in polyandric species d. to infer whether monandry was the ancestral state in separate origins of eusociality

Biology & Microbiology