EVOLUTION
SOURCES OF VARIATION IN A POPULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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mutation.
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evolution.
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migration.
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variation.
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Detailed explanation-1: -The slow gradual change in a species over time is called: Evolution.
Detailed explanation-2: -Evolution: Evolution consists of changes in the heritable traits of a population of organisms as successive generations replace one another.
Detailed explanation-3: -In modern biology, gradualism, or “phyletic gradualism, ” refers primarily to a pattern of sustained, directional, and incremental evolutionary change over a long period during the history of a species.
Detailed explanation-4: -“Darwin’s theory of evolution by natural selection predicts gradual and incremental changes to organisms occurring over very long timespans.
Detailed explanation-5: -Natural selection is a slow and gradual process which leads to the changes in the species or the formation of new species. Some individuals with certain traits have higher survival and reproductive rate than others.