Question
Considerably more phenotypic variation exists in domesticated varieties of species like dogs and cabbage than exists in non-domesticated species like lions and maple trees. Which two of the following statements best explains why this is true?
Responses
There is no selection and mating is random under domestication
There is no selection and mating is random under domestication
During domestication, very high rates of mutation are induced
During domestication, very high rates of mutation are induced
Genetic drift is important because domestication involves small populations
Genetic drift is important because domestication involves small populations
Many domesticated varieties would not survive in the natural world
Responses
There is no selection and mating is random under domestication
There is no selection and mating is random under domestication
During domestication, very high rates of mutation are induced
During domestication, very high rates of mutation are induced
Genetic drift is important because domestication involves small populations
Genetic drift is important because domestication involves small populations
Many domesticated varieties would not survive in the natural world
Answers
GPT-4o mini
The two statements that best explain why considerable phenotypic variation exists in domesticated varieties of species, compared to non-domesticated species, are:
1. **Genetic drift is important because domestication involves small populations** - During domestication processes, populations can become small due to selective breeding practices, which can lead to genetic drift. This can result in the fixation of certain traits and the emergence of new phenotypic variations.
2. **Many domesticated varieties would not survive in the natural world** - Domesticated species often exhibit traits that are advantageous or desirable in a human-controlled environment but may not be suitable for survival in the wild. This can lead to greater phenotypic variation as these traits are selected for or cultivated by humans, leading to more diverse forms that would not exist under natural selection pressures.
The other options regarding random mating and high mutation rates do not adequately account for the observed phenotypic variation in domesticated species.
1. **Genetic drift is important because domestication involves small populations** - During domestication processes, populations can become small due to selective breeding practices, which can lead to genetic drift. This can result in the fixation of certain traits and the emergence of new phenotypic variations.
2. **Many domesticated varieties would not survive in the natural world** - Domesticated species often exhibit traits that are advantageous or desirable in a human-controlled environment but may not be suitable for survival in the wild. This can lead to greater phenotypic variation as these traits are selected for or cultivated by humans, leading to more diverse forms that would not exist under natural selection pressures.
The other options regarding random mating and high mutation rates do not adequately account for the observed phenotypic variation in domesticated species.