Which statement is correct about a bottleneck event? (1 point)
Responses
A bottleneck event decreases the population of a species permanently.
A bottleneck event decreases the population of a species permanently.
A bottleneck event increases the gene pool of a population.
A bottleneck event increases the gene pool of a population.
A bottleneck event decreases the gene pool of a population.
A bottleneck event decreases the gene pool of a population.
A bottleneck event increases the population of a species permanently.
The correct statement about a bottleneck event is: "A bottleneck event decreases the population of a species permanently."
Yes, you are correct. Here are the correct answers:
2. A bottleneck event reduces the population of bears in one area by 80%. Which statement is correct about the bears’ gene pool?
Answer: A bottleneck event decreases the gene pool of a population.
Explanation: A bottleneck event reduces the population size and, as a result, reduces the number of different alleles in the population. This means the gene pool (the set of all alleles in a population) is smaller than it was before the bottleneck event.
3. Which information helps scientists determine the survival probability of a population?
Answer: factors such as population size, genetic diversity, habitat quality, fragmentation, and threats.
Explanation: Many factors influence the survival probability of a population, including its size, genetic diversity, the habitat quality, fragmentation and isolation of its habitat, and the presence of any threats or disturbances. Scientists use models and simulations to estimate the survival probability of populations, and conservation strategies focus on addressing the factors that pose the greatest risks to a population.
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1. Why are the gene pools of small populations reduced compared to those of larger populations?
2. A bottleneck event reduces the population of bears in one area by 80%. Which statement is correct about the bears’ gene pool?
3. Which information helps scientists determine the survival probability of a population?