AP BIOLOGY

Detailed explanation-1: -Populations do not necessarily consist of the individuals best adapted to survive and reproduce. Theoretically, the most fit individuals in a population will survive longest and reproduce the most, however chance plays a role in who survives, reproduces, and whose offspring survive to reproduce as well.

Detailed explanation-2: -Genetic variations among individuals in a population give some individuals an advantage in surviving and reproducing in their environment. This is known as natural selection. It leads to the predominance of certain traits in a population and the suppression of others.

Detailed explanation-3: -Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.

Detailed explanation-4: -Individuals with adaptive traits-traits that give them some advantage-are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Over time, these advantageous traits become more common in the population.

Detailed explanation-5: -Natural selection occurs when individuals with certain genotypes are more likely than individuals with other genotypes to survive and reproduce, and thus to pass on their alleles to the next generation.