Questions: Which of the following combinations are both forces of evolution? Selection and Mutation random mating and no migration Migration and no selection Mitosis and migration

The answer is the first one: Selection and Mutation.

Explanation for each option:

1. Selection and Mutation: Both are forces of evolution. Selection refers to the process by which certain traits become more common in a population due to those traits conferring a survival or reproductive advantage. Mutation is a change in the DNA sequence, which can introduce new genetic variation into a population. Together, they drive evolutionary change by creating and propagating advantageous traits.

2. Random mating and no migration: These are not forces of evolution. Random mating refers to the process where individuals pair by chance, not affecting allele frequencies. No migration means there is no gene flow between populations, which also does not contribute to evolutionary change.

3. Migration and no selection: Migration, or gene flow, is a force of evolution as it involves the movement of individuals and their genetic material between populations, potentially introducing new alleles. However, "no selection" implies that natural selection is not acting on the population, which is not a force of evolution.

4. Mitosis and migration: Mitosis is a process of cell division that results in two identical daughter cells and is not a force of evolution. Migration, as mentioned, is a force of evolution. Since mitosis is not a force of evolution, this combination is incorrect.

In summary, the correct combination of forces of evolution is Selection and Mutation.