Genetic Crosses 3.0 / 5 based on 1 rating ? BiologyDNA, genetics and evolutionA2/A-levelOCR Created by: Alison HemmingCreated on: 29-11-12 21:21 Homozygous Genotype of two identical alleles 1 of 12 Heterozygous Genotype of two different alleles 2 of 12 Epistasis A gene interaction where two or more genes work together to determine the phenotype 3 of 12 Gamete Haploid sex cell, e.g Sperm, egg 4 of 12 Genotype The alleles that an organism or cell contains 5 of 12 Phenotype The physical attributes or features seen as a result of the genotype 6 of 12 Sex linkage When the gene for a characteristic is found on one of the sex chromosomes 7 of 12 Dominant When an allele is always expressed whether there is one copy or two 8 of 12 Recessive When an allele is only expressed when there are two copies (homozygous) 9 of 12 Co-dominance When two different alleles are both expressed 10 of 12 Allele A different form of a particular gene 11 of 12 Carrier When someone is heterozygous for a recessive genetic disorder. They show no symptoms but can pass on the allele 12 of 12
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