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Natural Selection, Speciation Extreme Environments


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Natural Selection
The process where the best adapted organisms survive, reproduce and pass on their genes
Evolution
When the long term effects of natural selection leads to a characteristic becoming common place in a population
Adaptations
Beneficial features that help an organism to survive
Resistance
The ability to be unaffected by disease or poison
Speciation
When the long term effects of evolution lead to the creation of a new species, that is so genetically different that it can no longer successfully reproduce with its founder species
Reproductive Isolation
When organisms are blocked from reproducing by a physical barrier
Gene
A section of DNA that codes for a specific protein
Nucleus
The part of the cell that contains genetic information
Chromosome
1 molecule of DNA coiled up
Alleles
Different versions of the same gene.