Bio 311D Concept Map Simon Yu

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Bio 311D Concept Map Simon Yu

Species Interaction

several different relationships among species

competition

parasitism

the relationships may or may not be beneficial for one species and even have negative consequences

commensalism

mutualism

Speciation

formation of new and different species

repoductive isolation

new species form and some species may disappear

geographic isolation

Mutation and Genetic Drift

Genetic drift results from random changes in gene frequency from one generation to another

formation of new species

Mutations are a random change in the genetic code

The ultimate source of genetic variation

Population Regulation

disease

predation

density dependent regulatory factors

regulates the size of the population

competition due to limited food, water, and shelter

Diversity and its Recognition

diversity increases specialization

different species to have differenct or the same niches in an environment

Population Genetics

Hardy Weinberg Equilibrum

random mating

gene flow

selection

Phenotypic and genotypic variation exists among populations