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  2. Single-nucleotide polymorphism - Wikipedia

    The upper DNA molecule differs from the lower DNA molecule at a single base-pair location (a G/A polymorphism) In genetics and bioinformatics, a single-nucleotide polymorphism (SNP / s n ɪ p /; plural SNPs / s n ɪ p s /) is a germline substitution of a single nucleotide at a specific position in the genome that is present in a sufficiently large fraction of considered population (generally ...

  3. Genetic testing - Wikipedia

    Genetic testing, also known as DNA testing, is used to identify changes in DNA sequence or chromosome structure. Genetic testing can also include measuring the results of genetic changes, such as RNA analysis as an output of gene expression, or through biochemical analysis to measure specific protein output. [1]

  4. DNA - Wikipedia

    Compared to B-DNA, the A-DNA form is a wider right-handed spiral, with a shallow, wide minor groove and a narrower, deeper major groove. The A form occurs under non-physiological conditions in partly dehydrated samples of DNA, while in the cell it may be produced in hybrid pairings of DNA and RNA strands, and in enzyme-DNA complexes.

  5. Introduction to genetics - Wikipedia

    Introduction to genetics. Genetics is the study of genes and tries to explain what they are and how they work. Genes are how living organisms inherit features or traits from their ancestors; for example, children usually look like their parents because they have inherited their parents' genes. Genetics tries to identify which traits are ...

  6. CRISPR - Wikipedia

    CRISPR - Wikipedia. ) (an acronym for clustered regularly interspaced short palindromic repeats) is a family of sequences found in the [2] These sequences are derived from DNA fragments of bacteriophages that had previously infected the prokaryote. They are used to detect and destroy DNA from similar bacteriophages during subsequent infections.

  7. 23andMe - Wikipedia

    23andMe Holding Co. is a publicly held personal genomics and biotechnology company based in South San Francisco, California. It is best known for providing a direct-to-consumer genetic testing service in which customers provide a saliva sample that is laboratory analysed, using single nucleotide polymorphism genotyping, to generate reports relating to the customer's ancestry and genetic ...

  8. Gene - Wikipedia

    A human chromosome can have up to 500 million base pairs of DNA with thousands of genes. In biology, the word gene (from Greek: γένος, génos; [1] meaning generation [2] or birth [1] or gender) can have several different meanings. The Mendelian gene is a basic unit of heredity and the molecular gene is a sequence of nucleotides in DNA that ...

  9. Non-binary gender - Wikipedia

    A 2015 National Center for Transgender Equality study surveyed nearly 28,000 transgender people in the United States, 35% of whom identified as non-binary or genderqueer. 84% of respondents reported using pronouns that did not match the gender given on their birth certificates. 37% of respondents preferred he/him, 37% preferred she/her, and 29% ...