Genetics

Personality trait shares genetic link with depression

Scientists analysed the DNA of over 300,000 people and found many genes linked to neuroticism – characterised by feelings of anxiety, worry and guilt. The genes are also linked to depression. The findings help shed light ...

Genetics

Key tool in DNA repair kit found

Breaks in DNA can cause chromosome rearrangements, abnormalities linked to cancer. Now Yale scientists have identified how the molecule DNA2 helps begin the complex process of repairing these breaks.

Genetics

Breakthrough in detecting mutations in genomes of single cells

Einstein researchers have developed and validated a method for accurately identifying mutations in the genomes of single cells. The new method, which can help predict whether cancer will develop in seemingly healthy tissue, ...

Obstetrics & gynaecology

Study examines issues related to prenatal detection of trisomies

Cell-free (cf) DNA analysis of maternal blood for trisomies 21, 18 and 13 is superior to other methods of screening, but it's expensive. One strategy to maximize cfDNA testing at reduced cost is to offer it contingent on ...

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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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