Inheritance Diagrams

• Monohybrid


  B or b
• Multiple Alleles


  $I^B I^O, I^A I^O$
• Codominant


  $C^R C^W$
• Sex-Linkage


  $X^R X^r, X^R Y$
• Autosomal Linkage


  AaBb

  • 3:1 ratio
• Epistasis


  EE Bb

  • Dominant needs to be expressed in first gene
• Dihybrid


  RRYY (x) rryy

  • 9:3:3:1 ratio