Asked by Azaria
Which of the following best describes genetic variation in organisms?
Genetic variation does not benefit organisms in their environment.
Genetic variation occurs because both parents give the exact same genes to their offspring.
Genetic variation is differences in an organism's DNA, leading to a variety of traits.
Genetic variation is chosen by the organism.
All Answers 1
Answered by
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Correct answer:
- Genetic variation is differences in an organism's DNA, leading to a variety of traits.
Why the others are incorrect:
- "Genetic variation does not benefit organisms in their environment." — False. Variation can be beneficial, neutral, or harmful; beneficial variants may increase survival and reproduction.
- "Genetic variation occurs because both parents give the exact same genes to their offspring." — False. Sexual reproduction mixes different parental genes (and mutation adds new variants), so offspring are usually genetically different.
- "Genetic variation is chosen by the organism." — False. Variation arises by mutation, recombination, and gene flow, not by conscious choice.
- Genetic variation is differences in an organism's DNA, leading to a variety of traits.
Why the others are incorrect:
- "Genetic variation does not benefit organisms in their environment." — False. Variation can be beneficial, neutral, or harmful; beneficial variants may increase survival and reproduction.
- "Genetic variation occurs because both parents give the exact same genes to their offspring." — False. Sexual reproduction mixes different parental genes (and mutation adds new variants), so offspring are usually genetically different.
- "Genetic variation is chosen by the organism." — False. Variation arises by mutation, recombination, and gene flow, not by conscious choice.
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