Allele - A variation of a gene e.g. blue eyes or brown eyes, Dominant - An allele that is expressed when you only have 1 copy, Recessive - An allele that is expressed only if you have 2 copies., Genotype - The alleles that a person has. Inherited from their mother and father., Phenotype - The physical appearance of a characteristic e.g. brown, blue, curly, Heterozygous - When you have 2 different alleles (e.g. Bb or Ff), Homozygous - When you have 2 of the same Alleles BB or bb,

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