EVOLUTION
TYPES OF SELECTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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directional selection
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stabilizing selection
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disruptive selection
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artificial selection
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sexual selection
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Detailed explanation-1: -Disruptive selection, also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. In this case, the variance of the trait increases and the population is divided into two distinct groups.
Detailed explanation-2: -Tall kelp (seaweed) have a distinct advantage over shorter kelp in receiving needed sunlight in their ocean environment.
Detailed explanation-3: -Stabilizing selection is very common. The individuals that survive and reproduce more successfully are those that have intermediate phenotypic values. Mortality among newborn infants, for example, is highest when they are either very small or very large; infants of intermediate size have a greater chance of surviving.
Detailed explanation-4: -Birth weight is the body weight of a baby at its birth. The average birth weight in babies of European & African descent is 3.5 kilograms (7.7 lb), with the normative range between 2.5 and 4.0 kilograms (5.5 and 8.8 lb). On average, babies of Asian descent weigh about 3.25 kilograms (7.2 lb).