The advantage of HRR is that the original DNA sequence is restored without any loss of information because it uses the sister chromatid as a template, making it an error-free method of repair.
Template switching is an error-free method of bypassing lesions, and these experiments indicate that the absence of template switching leads to increased mutagenesis due to the presence of 8-oxoG.
A majority of the repair genes overexpressed were in primary tumors with a poor prognosis; therefore, the authors speculate that primary melanoma cells are capable of undergoing metastasis and replication by using a fast and error-free method.
HRR uses thousands of bases of sequence homology either from a sister chromatid or a homologous chromosome during S/G2 phase and is the most error-free method of repair [ 30].
There are two ways a cell can fill in this gap: an error-prone method using a translesion polymerase to copy the damaged template or an error-free method using the newly formed sister strand as a template (template switching).
Since no error-free method to specify priors is available for complex biological phenomena, exploring a wide variety of prior specifications and combining results provides some solution to this problem.
Homologous recombination is considered an error-free method of repair, while nonhomologous end joining is considered to be error-prone, introducing small insertions or deletions when partially degraded ends inhibit precise repair (Cavero et al. 2007; Shrivastav et al. 2008).
As noted by Bower [ 4], however, there is no error-free method to determine examine 'active ingredients' in complex care settings, although meta-regression methods, randomised controlled trials manipulating 'active ingredients' and qualitative analysis are all likely to contribute to this understanding.
Aseltine and colleagues suggested that status measures may not be an error-free method of measuring change, because patients' standards, or the criteria they use to determine their ratings, may change following treatment as their frame of reference may change, so that apparently identical ratings are not, in fact, comparable.
However BRCA1 and BRCA2 proteins have multiple functions including participating in a pathway that mediates repair of DNA double strand breaks by error-free methods.
Although no dietary assessment method is error free, any residual error in the dietary diaries is unlikely to differ between mothers of monozygotic and dizygotic twins and would therefore be captured under either the C or E component, if the error is respectively correlated between twins or is random, thereby reducing heritability.
