Inheritance that does not follow simple dominance: incomplete dominance, codominance, multiple alleles such as the ABO blood groups, and lethal alleles that change expected ratios.
Deshapriya Senevirathne. B.Sc. (Hons) Biology Special, University of Peradeniya — graduated with a class pass. All the content and lessons in A/L Biology on Paadama are reviewed by Deshapriya Senevirathne, and the lessons are taught by him.