The relative importance of selection and genetic drift in the evolution of duplicated genes is under debate. |
The first alternative is that the long basal branches are simply the chance result of genetic drift in a large, panmictic ancestral population. |
This is different than the traditional effective sizes, which are descriptions of the equilibrium behavior of genetic drift in the population. |
This positive feedback loop implies an evolutionary pattern of divergent genetic drift to high or low GC contents. |
This sampling error causes random fluctuations in allele frequencies called genetic drift. |
Rare and endangered species are susceptible to loss of genetic variation through genetic drift in small populations. |