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Transcript
Allele Length of DNA on a chromosome normally encoding for a polypeptide Gene The genetic composition of an organism Genotype Condition in which the alleles of a particular gene are different Heterozygous A group of genetically identical organisms formed from a single parent as a result of asexual reproduction or artificial means Clone The number of times an allele occurs within the gene pool Allele Frequency A term applied to cells in which the nucleus contains two sets of chromosomes Diploid (2n) Total number of alleles in a particular population at a specific time Gene pool Condition in which the alleles of a particular gene are identical Homozygous Term used to describe a gene that has more than two possible alleles Multiple Alleles A term applied to an allele that is always expressed in the phenotype of an organism Dominant Allele The characteristics of an organism, often visible, resulting from both its genotype and the effects of its environment Phenotype A homozygous organism with two dominant alleles Homozygous Dominant A change to a phenotype not inherited by future generations Modification The abbreviation for deoxyribose nucleic acid DNA Reproductive (sex) cell that fuses with another of the same type of cell during fertilisation Gamete A homozygous organism with two recessive alleles Homozygous Recessive The condition in which the effect of an allele is apparent in the phenotype of a diploid organism only in the presence of another identical allele Recessive Allele A change in the sequence of bases in DNA Mutation Term referring to cells that contain only a single copy of each chromosome Haploid Condition in which both alleles for one gene in a heterozygous organism contribute to the phenotype Co-dominance One form of a gene
