EVOLUTION
HARDY WEINBERG EQUILIBRIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The mutant genes have potential value for the survival of future generations
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Genetic drift causes the mutant genes to spread throughout the population
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Mutant genes are recessive and are carried by heterozygous individuals
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Mutant genes are dominant and are carried by both the heterozygous and homozygous individuals
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Detailed explanation-1: -Some harmful mutations are not eliminated from the gene pool because they are probably recessive and carried in a heterozygous state and hence cannot be detected by selection. Although harmful, these mutations might not contribute to reducing the fitness as they are in recessive state.
Detailed explanation-2: -Why are some mutations retained within a population and others eliminated? If the mutation is harmful, it is selected against and is usually eliminated from the population. If the mutation is beneficial and is habitable, it is selected and retained in the population.
Detailed explanation-3: -Harmful mutations result in organisms less likely to survive, and so these mutations tend to be eliminated from the population (group of organisms in a species). Beneficial mutations also tend to be eliminated by chance, but less often, and tend to be preserved.
Detailed explanation-4: -Answer and Explanation: The correct answer to this question is B. They always cause a change to an organism’s genotype. Regardless of the cause of the change, a DNA sequence is always altered when it mutates.