Phenotype vs Genotype
Phenotype -- the trait produced by the genotype -- depends on both genotype and environmental factors -- not inherited by offspring -- consists of expressed genes -- dominant alleles can mask recessive alleles -- genotype AA causes phenotype A -- genotype Aa causes phenptype A -- genotype aa causes phenotype a
Genotype -- the actual genetic code of an organism -- codes for the phenotype -- consists of both dominant and recessive alleles -- inherited by offspring -- usually refers to one specific gene causing a trait -- written as a combination of uppercase and lowercase letters -> AA -> Bb -> ee -- dominant = uppercase letters -- recessive = lowercase letters -- both uppercase = homozygous dominant -- one uppercase and one lowercase = heterozygous -- both lowercase = homozygous recessive
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