Sentence examples for letter variation from inspiring English sources

Thus, in large societies, many individuals can carry the rarer version of the single letter variation in their DNA sequence.Researchers trying to discover the genes that make some people susceptible to certain diseases compare a group of sick people with a group of healthy ones.

Medieval lettering is notoriously fickle: individual letter variations, styles and combinations are confusing at the best of times.

Here's the core of his argument: Medieval lettering is notoriously fickle: individual letter variations, styles and combinations are confusing at the best of times.

It identifies the 250,000 to 500,000 single-letter variations that provide almost as much mapping information as all 10m single-letter variations.

The researchers have examined just 1m single-letter variations so far.

Single-letter variations that are close together in the chromosome tend to be inherited as intact blocks of information.

Each of these sites is where people are known to have single-letter variations in their DNA, called single nucleotide polymorphisms (SNPs).

Researchers believe that many common diseases are caused by single-letter variations in the DNA code called single nucleotide polymorphisms, or SNPs (pronounced "snips").

They paid special attention to the number of single-letter variations or small insertions and deletions in his DNA clues as to whether he had a genetic variation that slightly boosted his risk for heart disease or cancer.

The map, published in the current issue of Nature, confirms that it is indeed possible to rely on a relatively small number of single-letter variations to see the bigger picture.

(Thanks to the way the Vanderbilt medical system is organized, researchers can use such samples for multiple purposes and link that information to the patient's medical record, while the patient's identity remains hidden). The team analyzed DNA from 10,000 people, searching for 21 specific single-letter variations that had been previously linked to different diseases.