Genetic Terminology 1.0 / 5 based on 1 rating ? BiologyDNA, genetics and evolutionASEdexcel Created by: Corrine SCreated on: 11-05-13 19:52 Gene Sequence of bases on DNA molecue that codes for protein, resulting in characteristics 1 of 9 Allele Different version of gene. Two copies; one from each parent. 2 of 9 Genotype The alleles a person has, e.g. BB, Bb, or bb for eye colour 3 of 9 Phenotype The physical characteristics a person has, e.g. brown hair, blue eyes 4 of 9 Dominant An allele whos characterisic appears in phenotype even with one copy 5 of 9 Recessive An allele whose characteristics only appear in phenotype if two copies are present 6 of 9 Homozygote An organism that carries two copies of same allele 7 of 9 Heterozygote An organism that carries two different alleles 8 of 9 Carrier If recessive allele cause disease, a carrier is someone who has one dominant and one recessive allele. They carry disease 9 of 9
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