GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because average height grass plants are favored, stabilizing natural selection is occurring.
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Because average height grass plants are favored, disruptive natural selection is occurring.
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Because tall grass plants are favored by the animals that eat grass, directional selection is occurring.
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Because short and tall grass plants are favored, normal natural selection is occurring.
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Detailed explanation-1: -Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields.
Detailed explanation-2: -Dog breeding is another prime example of artificial selection. Although all dogs are descendants of the wolf, the use of artificial selection has allowed humans to drastically alter the appearance of dogs.
Detailed explanation-3: -Artificial selection is a breeding process in which a population of organisms is screened for some quantitative trait or traits and those individuals rated highest are used as parents for the next generation.
Detailed explanation-4: -Natural selection is any selection process that occurs as a result of an organism’s ability to adapt to its surroundings. Artificial selection, on the other hand, is selective breeding that is imposed by an external entity, usually humans, in order to enhance the frequency of desirable features.