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.
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