Gene - A section of DNA that codes for a protein, Allele - Different forms of the same gene (shown as single letters e.g. F or f, G or g), Genotype - The 2 alleles of a gene for an inherited characteristic (shown as two letters together e.g. FF of Ff or ff), Phenotype - The organisms physical appearance, Homozygous - An organism that has 2 of the same alleles for a characteristic. (e.g. BB or bb, GG or gg, FF or ff), Heterozygous - An organism that has 2 different alleles for a characteristic (e.g. Bb or Gg or Ff), Dominant - This characteristic always shows in the phenotype if it is present. (shown as a capital letter e.g. E, G or F), Recessive - This characteristic will only be shown in an organisms phenotype if they have 2 copies of it (shown as lower case letters e.g. e, g or f),

S3 Inheritance Key Terms

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