The majority of DNA in dental calculus is microbial and originates from the oral microbiome; however, a small but consistent proportion of DNA (mean 0.08 ± 0.08%, range 0.007 0.47%) derives from the host genome.
The majority of DNA fragments the team discovered were discarded as contamination, but 12 remaining fragments contained genes from bacteria often found in hot-spring environments.
It turns out that the overwhelming majority of DNA on our chromosomes is not organized as specific genes.
What I found was worse than I imagined: the vast majority of DNA evidence collected from rape victims in Illinois is never tested.
The vast majority of DNA damage affects the primary structure of the double helix; that is, the bases themselves are chemically modified.
The majority of DNA samples were obtained from 3-generation families, though some were available from 4 generations of the families.
The fact that linear DNA degradation was prevented by both EDTA and EGTA is coherent with the fact that the majority of DNA nucleases utilize Zn2+, which is eliminated by both chelators.
Kimura's neutral theory asserts that the majority of DNA sequence polymorphisms observed within a species has no effect on the fitness, because the majority of harmful mutations are eliminated from the population by negative selection.
The majority of DNA interactions are mediated by the PAD, wherein the main chain amides on the "outer" β-strands of the PAD β-sheet make a series of hydrogen bonds with the template and primer strands.
DNA degradation was investigated just after the first appearance of the nucleosomal ladder when the vast majority of DNA was still present as a very high molecular weight band and some DNA had not even entered the gel (Figure 1A).
This finding was surprising given that it is widely held that larger, eukaryotic genomes (i.e. higher eukaryotes) contain mostly noncoding "Junk" DNA [e.g.s 6], [7], [11], [33], [34], whereas the vast majority of DNA in unicellular genomes is thought to be protein-coding.
