Allele - A variant of a gene, Phenotype - The observable characteristics expressed by an organism, Genotype - The set of genes responsible for a particular trait, Homozygous Dominant - A genotype with two dominant alleles, Homozygous Recessive - A genotype with two recessive alleles, Heterozygous - A genotype with a dominant and recessive allele, Dominant allele - An allele which overpowers the recessive allele in terms of the phenotype expressed, Recessive allele - An allele which is overpowered by the dominant allele in terms of the phenotype expressed, Autosome - One of the 22 pairs of chromosomes which are not the sex chromosomes, Sex chromosome - One of the 23rd pair of chromosomes which determine an individuals sex, DNA - The genetic makeup of an organism, Chromosome - A package of tightly coiled DNA, Gene - A section of DNA which is responsible for the inheritance of traits, Mitosis - Cell division used for growth and repair where 2 identical cells are formed, Meiosis - Cell division for reproduction where 4 genetically unique daughter cells are formed, Fertilisation - The fusion of gametes to form a zygote, Zygote - A fertilised egg, Gamete - A sex cell,

Genetics Key Terms

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