Sentence examples for modification of preexisting from inspiring English sources

But again, most of biological evolution most of the time consists of the modification of preexisting structures within particular lineages.

This shows that, like much of biological evolution, new designs are often produced by simple modification of preexisting designs in artifact evolution.

In S. cerevisiae, it has been shown that the number of shared TFBSs in duplicate genes decreased with evolution time whereas the total number remained unchanged, suggesting that there is a balance between gain in functionally novel TFBSs and either the loss of preexisting TFBSs or the modification of preexisting TFBSs to new functions [ 12].

Considering that Band 3 modifications and modification of preexisting molecule generating pathways are mostly the downward consequence of oxidative provocations, it is likely that in conditions of distorted homeostasis oxidized RBCs result as product of an "accelerating senescence" pathology associated with the premature appearance of cellular senescence phenotype in younger RBCs.

Evolution by simple modification of preexisting conditions (Fig. 10).

Behind the lobes of the ice sheet, ice lakes developed that drained according to the modifications of preexisting valleys for glacial action.

Previous studies, focusing on a limited number of gene families, suggest that vertebrate complexity predominantly arose through the duplication and subsequent modification of retained, preexisting ECM genes.

Here, we show that both PRC1 and PRC2 activities are redirected to noncanonical targets, PCH domains, and other CpG-rich sites, notably gene exons, in embryonic stem cells (ESCs) in which DNA methylation is depleted, and that this is inhibited by the presence of preexisting histone tail modifications, notably H3K9me3 and H3K36me3.