Inheritance Key Terms

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Flashcards on Inheritance Key Terms, created by BeccyS on 11/03/2016.
Beccy Stead
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Beccy Stead
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Genotype genetic make up of an organism
Mutation any change to the genotype (includes substitution, deletion or addition of bases)
Phenotype an organism's characteristics resulting from the genes an organism possesses and the environment in which it has developed
Gene sequence of nucleotide bases in DNA which determines the sequence of amino acids in a protein-a single characteristic
Locus position of the gene on a chromosome
Alleles different forms of a gene
Dominant allele always expressed in the phenotype
Recessive allele only expressed in the phenotype when 2 copies of the allele are present
Codominant alleles contribute evenly to the phenotype
Homozygous two alleles on a homologous pair of chromosomes that are the same
Heterozygous two alleles on a homologous pair of chromosomes that are different
Epistatic gene when its presence suppresses the effect of a gene at another locus
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