Sentence examples for genes are difficult from inspiring English sources

However, accurate measurements of absolute expression levels and the reliable detection of low abundance genes are difficult to achieve.

Under blast nurseries conditions, in contrast, the specific NBS-LRR R genes are difficult to detect because of the diversity of M. oryzae strains.

However, these strategies present common drawbacks due to the fact that weakly or transiently expressed ivi genes are difficult or impossible to detect.

The inheritance pattern of a number of major genetic disorders suggests the possible involvement of genes that are expressed from one allele and silent on the other, but such genes are difficult to detect.

The EN, DLX and NOTO genes are difficult to classify.

However, the more polymorphic and repetitive MHC class I genes are difficult to assemble and annotate.

Detection of the underlying genes is difficult because each seems to have only a small effect on the risk of getting the disease.

However, clustering genes is difficult.

Pyramiding resistance genes is difficult to accomplish using conventional breeding because of the dominance and epistasis effects of the genes controlling disease resistance.

Finding the wheat VRN genes was difficult, given that that they do not resemble those found so far in Arabidopsis and that the unwieldy wheat genome has yet to be sequenced.

However, due to various reasons, including considerable heterogeneity of the disease, the identification of susceptibility genes is difficult and most associations have not been replicated.