Snapshots of gene expression in rice: limitations for allelic expression imbalance determination.
Snapshots of gene expression in rice: limitations for allelic expression imbalance determination.
复制标题
水稻基因表达快照:等位基因表达失衡测定的局限性。
作者:
Akkinepalli H
In an initial investigation of differential expression of genes caused bycis-acting regulatory elements in rice, the lack of reproducibility led us to question the basic premise of allelic expression imbalance determination: namely that departures of cDNA expression ratios from those observed in genomic DNA provide unequivocal evidence ofcis-acting polymorphisms. This paper describes experiments designed to demonstrate that stochastic variation in low copy number of targets in PCR reactions give variable allelic ratios even when starting with the same copy numbers of the two alleles. These significant departures from an expected 1:1 ratio provide an explanation to the lack of reproducibility observed for our cDNA measurements.
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