coalescence theory A theory stating that all alleles of a gene must have descended from a single allele, the coalescent. The theory applies to neutral or nearly neutral genes, usually in a population of constant size where random mating occurs. The coalesence time (i.e. the time to the most recent common ancestor) depends on the population size and generation time.
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repressor , repressor In the operon theory of gene regulation, a protein produced by a regulatory gene that inhibits the activity of an operator gene, and hence… , neuron • , exon •Agamemnon, Memnon •ninon, xenon •noumenon • Trianon • xoanon •organon • Simenon • Maintenon •crampon, kampong, tampon •Nippon • coupon •Akron,… 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… Selfish Dna , Evolutionary biologists increasingly accept that genes are selfish. But what does this mean? Clearly genes do not have personal motivations, and even… Methylation , DNA methylation is a mechanism used to regulate genes and protect DNA from some types of cleavage. It is one of the regulatory processes that are ref… Chromosome Theory Of Heredity , chromosome theory of heredity The unifying theory put forward by W. S. Sutton in 1902 that Mendel's laws of inheritance may be explained by assuming…
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