Related topics: dna sequences

Confirmed new fungus has mysterious origins

CABI has confirmed a new species of fungus after the BBC Springwatch show called on Dr. Harry Evans' expertise when the mysterious specimen was first discovered in a Victorian gunpowder store at Castle Espie wetland center ...

Scientists develop novel circulating tumor DNA biosensor

Nucleic acids analysis is mainly used in pathogen detection, genetic disease identification and early cancer diagnosis. For example, quantitative analysis of circulating tumor DNA (ctDNA), a free DNA fragment derived from ...

Piecing thylacine DNA back together

The DNA of extinct species is providing a window into their biology, evolution, and natural history. However, after an animal's death, its DNA invariably breaks into tiny pieces, making it difficult to computationally reconstruct.

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Genetic testing

Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases, and can also be used to determine a person's ancestry. Normally, every person carries two copies of every gene, one inherited from their mother, one inherited from their father. The human genome is believed to contain around 20,000 - 25,000 genes. In addition to studying chromosomes to the level of individual genes, genetic testing in a broader sense includes biochemical tests for the possible presence of genetic diseases, or mutant forms of genes associated with increased risk of developing genetic disorders. Genetic testing identifies changes in chromosomes, genes, or proteins. Most of the time, testing is used to find changes that are associated with inherited disorders. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a person's chance of developing or passing on a genetic disorder. Several hundred genetic tests are currently in use, and more are being developed.

Since genetic testing may open up ethical or psychological problems, genetic testing is often accompanied by genetic counseling.

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