Inherited change 0.0 / 5 ? BiologyDNA, genetics and evolutionA2/A-levelAQA Created by: KatieSteweeCreated on: 10-01-17 17:06 The genetic composition of an organism Genotype 1 of 14 The physical characteristics of an organism resulting from both its genotype and the environment Phenotype 2 of 14 The position of a gene on a chromosome/DNA molecule Locus 3 of 14 A pair of chromosomes, one maternal and one paternal that have the same gene loci and determine the same features are ... chromosomes Homologous 4 of 14 Condition in which the alleles of a particular gene are identical Homozygous 5 of 14 Condition in which the alleles of a particular gene are different Heterozygous 6 of 14 the term applied to an allele that is always expressed in the phenotype of an organism Dominant 7 of 14 The term applied to an allele that is only shown in the phenotype of a diploid organism if another identical allele is present recessive 8 of 14 Both alleles for one gene in a heterozygous organism contribute to the phenotype Codominance 9 of 14 Two characteristics determined by two different genes located on different chromosomes are inherited together it is called ... inheritance Dihybrid 10 of 14 When a gene is carried on EITHER the X - or Y chromosome it is called sex .. linkage 11 of 14 The section of the X-chromosome for which there is no equivalent homologous portion of the Y chromosome is the non-... section homologous 12 of 14 Two or more genes carried on the same (non sex) chromosome it is known as ... linkage Autosomal 13 of 14 When the allele of one gene affects or masks the expression of another in the phenotype Epistasis 14 of 14
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