BY: LUKE WOODY

REST OF THE STANDARDS

DARWINIAN VIEW OF LIFE

Darwin had four observations

• Species are cable of producing more offspring than the environment can support.

• Populations vary in traits

• Traits are inherited from parents and are random and not directed toward any preferential adaption.

• Competition leads to some offspring not surviving and others being able to pass on their traits.

• Darwin said that random events creates change in genes. They are expressed as different traits.

• Nature selects the most fit phenotype and discards the least fit.

• Darwin saw evolution as a gradual accumulation of genotypic change in a population to the point that the new population becomes a new species.

• Genetic drift is a non selective process occurring in small populations.

• Reduction of genetic differences within a population can increase the differences between populations of the same species.

SPECIATION

• Speciation is the origin of new species.

• The rate of new species and their origin can vary based on adaptive radiation and the new habitats available.

• Adaptive radiation is when a species enters a new environment and begins to fill a variety of niches to create many new lives of descent.

• An organisms adaption to a local environment shows its change in the genome.