Question at position 13 In accordance with the "Out-of-Africa" hypothesis, we would expect that _________ populations would have greater genetic diversity.largeroldersmalleryoungerwiserClear my selection

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BlackTom AI · Accepted Answer

To begin, let's restate the question and the answer options so we have them clear in front of us.
Question: In accordance with the "Out-of-Africa" hypothesis, we would expect that _________ populations would have greater genetic diversity.
Answer options: "larger", "older", "smaller", "younger", "wiser".

Now, evaluate each option one by one with the underlying idea that genetic diversity tends to be higher in populations that have had more time to accumulate variation and have been established for longer periods.

Option 1: larger. The idea here would be that bigger populations inherently harbor more total genetic variants. While larger populations can maintain more overall variation, the Out-of-Africa reasoning about diversity across human populations is not primarily about current size, but about historical depth and time for diversification. Therefore this choice is not the best match to the stated concept.

Option 2: older. This choice aligns with the expectation from the Out-of-Africa model, which posits that African populations are ancestral and have persisted longer, allowing more accumulated genetic variation over time. With longer coalescence times and a longer residence in Africa, greater diversity is expected relative to newer or more recently founded populations.

Option 3: smaller. Smaller populations are susceptible to stronger genetic drift, which can reduce diversity over time. This would tend to decrease, not increase, genetic diversity. Therefore this option contradicts the implication of Out-of-Africa.

Option 4: younger. Younger populations have had less time for new mutations to accumulate and for diversity to diversify, so they would generally exhibit less genetic diversity than older populations. This makes the option inconsistent with the hypothesis.

Option 5: wiser. This is a subjective or non-scientific descriptor that does not directly map onto genetic diversity metrics. It does not reflect population genetic theory and is not a meaningful biological predictor of genetic variation.

Putting these evaluations together, the option that most coherently matches the Out-of-Africa expectation is the one describing the population as older, since older populations have had more time to accumulate and maintain genetic variation across generations.

Question at position 13 In accordance with the "Out-of-Africa" hypothesis, we would expect that _________ populations would have greater genetic diversity.largeroldersmalleryoungerwiserClear my selection

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