Evolution
Evolution is change in allele frequency over time in a population. There are four factors that drive evolution:
Mutation: A heritable change in nucleotide sequence in the gene or chromosome. Mutation is the only way new traits are formed. It may or may not affect reproductive success. Genetic Drift: A random change in allele frequency.
Migration: A part of a population migrates to another population. Natural Selection: (Charles Darwin's Theory) Organisms with best suited for an environment with better traits survive, reproduce, and increase the allele frequency. There has to be 3 conditions in order for natural selection to occur: variation, heritability, different reproductive success. Evidence of Evolution
SpeciationSpeciation - Creation of new species. There are two types:
|
Taxonomy
Scientific Classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Helicidae
Genus: Helix
Species: Helix Aspersa
Phylum: Mollusca
Class: Gastropoda
Order: Stylommatophora
Family: Helicidae
Genus: Helix
Species: Helix Aspersa