Which mutation scenario will always lead to natural selection?(1 point)
Responses
a mutation causes a gene to become inactivated
a mutation causes a gene to become inactivated
a mutation causes an inactivated gene to be reactivated
a mutation causes an inactivated gene to be reactivated
a mutation causes a specific variation within the population
a mutation causes a specific variation within the population
a mutation causes a specific advantage within the populationn
Consider the following scenario:
There are variations in the fur color of mice. Some mice have white fur. Some have dark fur. Foxes more easily catch mice with white fur.
What will likely be a consequence of this scenario?
(1 point)
Responses
White fur will become predominant.
White fur will become predominant.
Mice with brown fur will be less likely to pass on their genetic information.
Mice with brown fur will be less likely to pass on their genetic information.
Brown fur will become predominant.
Brown fur will become predominant.
Mice with white fur will be more likely to survive and reproduce.
a mutation causes a specific advantage within the population
Mice with brown fur will be more likely to survive and reproduce.
What evolves during natural selection?(1 point)
Responses
entire species
entire species
the phenotypes of individual organisms
the phenotypes of individual organisms
inactivated genes
inactivated genes
the proportion of different traits in a population
the proportion of different traits in a population
The mutation scenario that will always lead to natural selection is when a mutation causes a specific advantage within the population. To understand why, let's first define natural selection. Natural selection is the process through which certain traits or characteristics become more or less common in a population over time, based on their impact on the survival and reproduction of individuals.
When a mutation causes a specific advantage within a population, it means that individuals with that mutation have a better chance of surviving and reproducing compared to those without the mutation. This advantage could be anything that increases the individual's fitness, such as improved ability to find food, resistance to disease, or enhanced reproductive success.
Because individuals with the advantageous mutation are more likely to survive and pass on their genes to the next generation, the frequency of that mutation in the population will increase over time. This is because individuals with the advantageous mutation will outcompete those without it, leading to the gradual selection and spread of the advantageous trait.
On the other hand, scenarios such as a mutation causing a gene to become inactivated, reactivating an inactivated gene, or causing a specific variation within the population may or may not lead to natural selection. Whether these scenarios result in natural selection depends on their impact on the survival and reproduction of individuals. If they confer a specific advantage, they can lead to natural selection. However, if they do not provide any advantage or disadvantage, they may not necessarily result in natural selection.