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Question
Which of the following type of selection is responsible for the reduction of phenotypic variation in a population?
Which of the following type of selection is responsible for the reduction of phenotypic variation in a population?
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Solution
The correct option is D Stabilizing selection
Phenotypic variation represents the variability in phenotype that exists in a population and is the prerequisite to evolution through the process of natural selection. natural selection does not act directly on the organism's genotype but on the phenotype. Three types of selection that bring about the changes in the distribution of phenotypes in a population are - stabilizing, directive, and disruptive. The process of selection that is well adapted to the environment is known as stabilizing selection and this selects against phenotype extremes. Under this selection procedure, individuals with intermediate and average phenotypes are favored thereby reducing the phenotypic variation in a population. Thus, the correct answer is option E.
Phenotypic variation represents the variability in phenotype that exists in a population and is the prerequisite to evolution through the process of natural selection. natural selection does not act directly on the organism's genotype but on the phenotype. Three types of selection that bring about the changes in the distribution of phenotypes in a population are - stabilizing, directive, and disruptive. The process of selection that is well adapted to the environment is known as stabilizing selection and this selects against phenotype extremes. Under this selection procedure, individuals with intermediate and average phenotypes are favored thereby reducing the phenotypic variation in a population.
Thus, the correct answer is option E.
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