epistasis उदाहरण वाक्य

उदाहरण वाक्य

1. Empirically, beneficial mutations tend to have a smaller fitness benefit when added to a genetic background that already has high fitness : this is known as diminishing returns epistasis.
2. Conversely, if mutations interact with one another by epistasis, the fitness landscape becomes rugged as the effect of a mutation depends on the genetic background of other mutations.
3. The first understanding of biological processes requiring the Rab23 gene came from 2 independent mouse mutations in the gene and an epistasis analysis with mutations in the mouse shh gene.
4. However, the effect of deleterious mutations tends on average to be very close to multiplicative, or can even show the opposite pattern, known as " antagonistic epistasis ".
5. Conversely, when two mutations together lead to a less fit phenotype than expected from their effects when alone, it is called "'negative epistasis " '.
6. The value of " K " controls the degree of epistasis in the NK model, or how much other loci affect the fitness contribution of a given locus.
7. The ability of the E locus to override the coat colour directed by the B locus is a classical example of epistasis, where multiple genetic loci affect the same observed trait.
8. It is believed that middle and long wave sensitive pigments appeared after the final stages of short wavelength sensitive opsin pigments evolved, and that trichromatic vision was formed through interprotein epistasis.
9. In one of his last papers ( together with C . C . Cockerham, Genetics 1992 ) he clarified the influence of multiplicative gene action versus other types of epistasis in heterosis.
10. Indicating that epistasis plays a major role in protein evolution  an observation that in combination with the observations of several examples of parallel evolution, support the neutral network model mentioned above.