In a hypothetical population of endangered turtles, a few individuals find themselves abandoned on an island. Due to the scarce resources and little genetic contact with populations of mainland turtles, their population size has remained modest over numerous generations. As a result, the island population develops distinct genetic traits. Which of the following sums up the idea of genetic drift in this population of isolated turtles the best? Genetic drift is responsible for the island population's increased genetic diversity, promoting adaptation to the unique island environment Genetic drift is the mechanism behind the emergence of unique genetic characteristics in the island population, due to random fluctuations in allele frequencies Genetic drift occurs when the island population actively selects traits that enhance their survival, leading to genetic divergence Genetic drift and natural selection are synonymous in this scenario, as they both contribute to the island population's unique genetic features
Question
In a hypothetical population of endangered turtles, a few individuals find themselves abandoned on an island. Due to the scarce resources and little genetic contact with populations of mainland turtles, their population size has remained modest over numerous generations. As a result, the island population develops distinct genetic traits. Which of the following sums up the idea of genetic drift in this population of isolated turtles the best? Genetic drift is responsible for the island population's increased genetic diversity, promoting adaptation to the unique island environment Genetic drift is the mechanism behind the emergence of unique genetic characteristics in the island population, due to random fluctuations in allele frequencies Genetic drift occurs when the island population actively selects traits that enhance their survival, leading to genetic divergence Genetic drift and natural selection are synonymous in this scenario, as they both contribute to the island population's unique genetic features
Solution
The statement that best sums up the idea of genetic drift in this population of isolated turtles is: "Genetic drift is the mechanism behind the emergence of unique genetic characteristics in the island population, due to random fluctuations in allele frequencies".
This is because genetic drift refers to the random changes in allele frequencies that can occur in small populations, leading to the emergence of unique genetic traits. It does not necessarily increase genetic diversity or promote adaptation, as these are more associated with natural selection. Genetic drift also does not involve active selection of traits, as it is a random process. Finally, while genetic drift and natural selection can both contribute to genetic changes in a population, they are not synonymous.
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