Chapter 3 – Mendelian Genetics
Monohybrid Cross – mating true breeding individuals from two parent strains.
Mendels Three Postulates
Unit Factors in Pairs: Genetic characters are controlled by unit factors that exist in pairs in
Dominance/Recessiveness: One unit factor is dominant to the other, which is known as
Segregation: In the formation of gametes, unit factors separate randomly so that each gamete
receives one or the other with equal likelihood. Segregation of the alleles occurs during meiosis,
and pairs of homologous chromosomes separate at anaphase I.