Dominat: an allele that always shows an effect in the organisum
Genotype: the genetic makeup for an organisum
Heterozygous: two alleles of the same gene that are different
Homozygous: two alleles of the same genes that are the same
Phenotype: The observable characteristics of an organisum
Recessive: an allele that only shows effect if both alleles of the pair are the same
Hope that helps