As to the shared transcription factors between At and Dt subgenomes, these exhibit subfunctionalization, in that two copies partition the ancestral function [47].
Alternatively, gene modules may have undergone subfunctionalization in which copies partition the ancestral function, as with the fatty acid synthases, aflA/aflB [ 57, 58].
More recently, subfunctionalization, as a neutral process where the two copies partition the ancestral function, has been proposed as an alternative mechanism driving duplicate gene retention in organisms with small effective population sizes.
According to the evolutionary models, duplicated genes may undergo different selection processes: nonfunctionalization where one copy loses the function, hypofunctionalization where expression/function of one copy decreases, neofunctionalization where one copy gains a novel function, or subfunctionalization where the two copies partition or specialize into distinct functions [ 52- 54].
Duplicated genes are most likely to be retained in the genome when the two descendant copies partition ancestral subfunctions of the single-copy progenitor or when one or both copies evolve new specializations of function (Lynch and Force 2000; Lynch et al. 2001).
Creating and copying partitions are some other tasks that can be done using this software.
Reboot your machine from the CD, and follow the instructions on the g4u homepage to copy your partition either to another local disk or to a network destination.
The fate of homeologous genes can be divided in four general categories; conservation or redundancy, nonfunctionalization (gene function loss for one copy), subfunctionalization (partitioning ancestral functions/expression patterns between duplicated genes) and neofunctionalization (evolution of a gene copy to a new function) [ 16, 17].
During development, copying and partitioning of DNA takes place during cell division such that every daughter cell receives a full genetic complement.
We began by transforming two different attenuated strains of S. typhimurium with a constitutively expressed luciferase plasmid (luxCDABE genes on a pBR322/colE1 high-copy without partitioning machinery) to allow for real-time monitoring of luminescence with an in vivo imaging system (IVIS).
The B allele frequency and Log R ratio data were analyzed using Illumina KaryoStudio software version 2.0 and CNV (copy number variation) partition V2.4.4.0.
