Genetics Keywords 3.0 / 5 based on 1 rating ? BiologyDNA, genetics and evolutionA2/A-levelAQA Created by: Abc12345Created on: 24-11-15 10:23 Gene A specific sequence of nucleotide bases within DNA that codes for the synthesis of a particular polypeptide 1 of 11 Allele One of the forms of a gene which occupies a specific locus on a chromosome 2 of 11 Recessive An allele that in a diploid organism is only expressed in the phenotype when two copies are present 3 of 11 Dominant An allele that when present in an organism is always expressed in the pheonotype 4 of 11 Codominant A pair of alleles that when present in the genotype of an organism are both expressed in the phenotype 5 of 11 Genotype The genetic composition of an organism - the alleles that an organism inherits 6 of 11 Phenotype The observable characteristics of an organism resulting from the interaction between its genes and the environment 7 of 11 Homozygous In a diploid organism having two identical alleles for a particular gene 8 of 11 Heterozygous In a diploid organism, having two different alleles for a particular gene 9 of 11 Monohybrid cross A genetic cross (breeding experiment) between individuals who have different alleles at one genetic locus of interest 10 of 11 Locus The specific position that a particular gene occupies on a chromosome 11 of 11
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