PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There must be many varieties of the trait in the population.
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The trait must allow members of the population to eat only some kinds of food.
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The trait must give individuals an advantage in producing offspring that survive.
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The trait must be the result of an immediate change in the environment.
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Detailed explanation-1: -Individuals with adaptive traits-traits that give them some advantage-are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Over time, these advantageous traits become more common in the population.
Detailed explanation-2: -In natural selection, having a certain trait makes an individual more reproductively successful than individuals lacking the trait. Thus, the allele that codes for the favored trait is passed on to more offspring, and becomes more common over time.
Detailed explanation-3: -Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection).
Detailed explanation-4: -Traits that allow a plant, animal, or other organism to survive and reproduce in its environment are called adaptations.