Homozygous - two of the same allele, Dominant - Only one copy is needed for the characteristic to be expressed. Shown as a capital letter, Heterozygous - two different alleles, Recessive - an allele that is only expressed in the phenotype if two copies are present. Shown with a lowercase letter, Genotype - the allele a person possesses for a particular gene, Phenotype - the physical characteristic, Gene - a section of DNA, 46 - diploid number of chromosomes found in a human body cell, gamete - another term for a sex cell, haploid - term used to describe a cell with half the original DNA, cystic fibrosis - a disease caused by a recessive allele, Huntingtons disease - a disease caused by a dominant allele,

Yr11 Inheritance terms

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