Evolution Mechanics

• The gene pool is the genetic sum of a population. A population may contain many alleles but an individual can only contain 2
• Hardy-Weinberg Principal


  The population must be large enough

  Mutations do not occur

  No immigration or emigration

  Reproduction is totally random

  2 and 4 are never met!
• Changes in genepool caused by the bottleneck effect or founder effect cause the gene pool to no longer be representative of the population
• A population may gain or lose alleles due to immigration or emigration
• Mutations introduces new genes to the gene pool. mutation occurs once every 50k to 100k duplications. These mutations can be harmful, beneficial or neutral
• An organism's genotype influences its mating, fertility, number of zygotes and birth rate