What must be present in a population for natural selection to act on? Abundant resources A large population size Genetic variation

I’m not sure which answer is an example of natural selection can you please help?

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Which of the following increase genetic variation in a population? O Founder effect O Mutations O Natural selection O Sexual reproduction O Bottleneck effect

Which of the following are sources of variation in a population? Sexual reproduction Sexual selection Mutation O Natural selection

Which of the following is true about natural selection? O It can only act on traits that are heritable and show variation. It always favors large, strong individuals. It allows species to choose what adaptations are passed on to offspring. O It acts on individual organisms, helping them become better adapted to their environment.

What scenario could lead to the founder effect in a population? Natural selection acting on genetic variation A large influx of new alleles from a neighboring population A few individuals leaving to start a new population in a different location

Which can bring new traits to a population and why? natural selection - because it increases the frequency of adaptive alleles in a population over time natural selection - because it makes new alleles natural selection and mutation because both increase the frequency of adaptive alleles in a population over time O mutation becaust makes new alleles mutation because it increases the frequency of adaptive alleles in a population over time O natural selection and mutation because both make new alleles 99+

Which of these conditions should completely prevent the occurrence of natural selection in a population over time? Group of answer choices The population size is large All variation between individuals is due only to environmental factors The population lives in a habitat where there are no competing species present The environment is changing at a relatively slow rate

Which of these conditions should completely prevent the occurrence of natural selection in a population over time? Group of answer choices Variation between individuals is not heritable. The environment is changing at a relatively slow rate. The population lives in a habitat where there are no competing species present. The population size is large.