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one-gene-one-polypeptide hypothesis The hypothesis that a large class of structural genes exists in which each gene encodes a single polypeptide, which may function either independently or as a subunit of a more complex protein. Originally it was thought that each gene encoded the whole of a single enzyme, but it has since been found that some enzymes and other proteins derive from more than one polypeptide and hence from more than one gene.
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Recessive Gene , recessive gene A gene whose phenotypic effect is expressed in the homozygous state but masked in the presence of the dominant allele (i.e. when the o… Regulator Gene , regulatory gene In the operon theory of gene regulation, a gene that is involved in switching on or off the transcription of structural genes. When t… Linkage , linkage •abridge, bridge, fridge, frig, midge, ridge •quayage • verbiage • foliage • lineage •ferriage •stowage, towage •buoyage, voyage •sewage •Bab… Complementary Genes , complementary genes Mutant alleles at different loci which complement one another to give a wild-type phenotype. Dominant complementarity occurs wher… , neuron • , exon •Agamemnon, Memnon •ninon, xenon •noumenon • Trianon • xoanon •organon • Simenon • Maintenon •crampon, kampong, tampon •Nippon • coupon •Akron,… Genes , A common feature of organisms is that offspring tend to look like their parents. For example, tall, brown-eyed parents tend to have tall, brown-eyed…
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