Multiple Alleles System.

Three or more slightly different molecular forms of a gene that occur among individuals of a population.

Genotype

genetic constitution of an individual;
a single gene pair
or the sum total of
an individuals genes.

Phenotype

Observable traits of an individual from genes interaction.

Monohybrid Cross

Cross between two f1 that have one gene locus in common .

Dihybrid Cross

Cross between two heterozygous parents that differ in two traits.