Conversely, in many cases the expression patterns of duplicated genes have diverged and are largely non-overlapping.
As for the problem of duplicated genes, he plans to make strains in which both copies of the same gene are knocked out.
Single gene duplication is a random process and tends to make duplicated genes scattered throughout the genome.
The prevalent functions of duplicated genes varied among different organisms.
Thus, we make no attempt here to examine in greater detail the selective forces that act on duplicated genes.
Inasmuch as this happens, positive selection might contribute to the observed acceleration of evolution in duplicated genes.
As a result, its genome is smaller (about 9.5 million base pairs) than that of S. cerevisiae with fewer duplicated genes.
Ohta (1987) was among the first to suggest that other mechanisms may exist for the preservation of duplicated genes in the population.
They also have a high number of duplicated genes compared to other bacteria.
The divergence of duplicated genes over time can be also monitored in genome-wide functional studies.