OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Individuals cannot change the traits that they inherit
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Pressures apply only to groups of individuals and not to individuals themselves.
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Mutations occur so rarely that they are detectable only at the population level.
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Significant traits are shared by all individuals in a population.
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Detailed explanation-1: -Why does Natural selection acts on individuals, but results occur at population level? Individuals themselves don’t change; those with heritable features that promote reproduction just produce more offspring.
Detailed explanation-2: -Why are only inherited traits, not acquired ones, necessary for the process of natural selection? Acquired traits can help an individual organism to survive its environment but only traits that are changed in the genetic level can be passed to offspring. Acquired traits can’t be passed down to an offspring.
Detailed explanation-3: -Individual organisms don’t evolve. Populations evolve. Because individuals in a population vary, some in the population are better able to survive and reproduce given a particular set of environmental conditions.
Detailed explanation-4: -Reason: Natural selection operates at population level to evolve the desired traits.