AP BIOLOGY

Detailed explanation-1: -A wide range means that the population has a lot of genetic variation. A lot of phenotypes means better chance of one of those phenotypes surviving. New allele combinations for, in offsprings. This shuffling of alleles result in many different genetic combinations.

Detailed explanation-2: -Traits that show a wide range of phenotypes, such as human height and skin color, are due to the cumulative expression of alleles of many genes and interactions with the environment.

Detailed explanation-3: -Phenotypic variation in humans is a direct consequence of genetic variation, which acts in conjunction with environmental and behavioral factors to produce phenotypic diversity. Genetic variants are classified by two basic criteria: their genetic composition and their frequency in the population.

Detailed explanation-4: -Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.

Detailed explanation-5: -Continuous variation Most characteristics are controlled by more than one gene and are described as being polygenic . Polygenic characteristics have phenotypes that can show a wide range of values, with each value following on from the value before. This is described as continuous variation .