The gene pool of a population of bighorn sheep in the southwest united states is altered when several sheep cross over a mountain pass and join the population. this would be an example of:

Gene flow

Explanation:

Gene flow is the process of transfer of variation in the genetic material from one population to another. This results in the change in the composition of the gene pool of the population which receives the genetic material.

The introduction of the new alleles by the process of gene flow increases the variation within the population and leads to the development of new traits in the new population. The gene flow begins when the population of a species translocate or migrate to a new location.

According to the given situation, the bighorn sheep population is migrating or shifting from the southwest United States to mountain pass and join the another population. Hence, the gene flow will occur due to inbreeding of population of the southwest United States and the population of mountain pass.

first of all, it's important to say that the book we shall not be moved, written by joan dash, is about the first strike of women in the united states in the year 1909. the best historical detail to clarify the reader's undertanding is the phrase "general strike". this strike involved women working at a garment factory who decided to protest   long working hours, low wages and brutal conditions. this strike became known as "the new york shirtwaist strike" or "the uprising of the 20,000". the strike mostly involved jewish women who did not speak english or who had a basic knowledge of the english language. finally, the strike went on from november 1909 until february 1910.