Unit 7

• The Hardy-Weinberg principle is a mathematical model used to calculate the allele frequency of traits with dominant and recessive alleles.
• The H-W model assumes that...

  • the sample is large
  • mating is random
  • the sample isn't experiencing selection
  • no mutation, emigration or immigration
• If the assumptions are met then the allele frequencies of the population will remain stable overtime.
• p - dominant

  q - recessive

  p + q = 1
• Epistasis - where the alleles of one gene mask the expression of the alleles of other genes.