Aggravated sexual assault is a crime of the first degree. b. An actor is guilty of sexual assault if he commits an act of sexual contact with a victim who is less than 13 years old and the actor is at least four years older than the victim. c.
Populations are influenced by fluctuations in any of the abiotic cycles. The fluctuations of seasonal cycles can cause populations to hibernate, migrate, or breed. Organisms breed as a result of seasonal fluctucations that cause them to have a limited resource supply.
Population genetics is intimately bound up with the study of evolution and natural selection, and is often regarded as the theoretical cornerstone of modern Darwinism. This is because natural selection is one of the most important factors that can affect a population's genetic composition.Natural selection occurs when some variants in a population out-reproduce other variants as a result of being better adapted to the environment, or âfitterâ.. Population-Genetic Models of Evolution. Population geneticists usually define âevolutionâ as any change in a population's genetic composition over time. The four factors that can bring about such a change are: natural selection, mutation, random genetic drift, and migration into or out of the population.