Allele
Allele is a variant form of gene
Recessive
A recessive gene is when an individual has two or more copies of recessive Allele.
Dominant
A Dominant gene shows, even if the individual has two or more copies of allele
Genotype
A genotype is that genetic constitution of an individual organism.
Phenotype
A phenotype is a set of observable characteristics of an individual resulting in the interaction of the phenotype and genotype.