Traits included physical features such as flower color. Today, these factors are called alleles. Mendel developed the hypothesis that some factors could be dominant, while others were recessive. According to his theory, a dominant factor is expressed when only one factor is present in the offspring. On the other hand, a recessive factor expresses its phenotype when both factors are present in the offspring. Today, the term genotype refers to the combination of factors possessed by an organism.
- alleles
- recessive
- only one factor is present
- recessive
- phenotype
- both factors are present
- genotype
