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Results 1 - 3 of 3 for Base
  1. What is DNA?: MedlinePlus Genetics 
    ... as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases ...
    https://medlineplus.gov/genetics/understanding/basics/dna - Genetics
  2. What is a gene?: MedlinePlus Genetics 
    ... vary in size from a few hundred DNA bases to more than 2 million bases. An international research effort called the Human Genome ... with small differences in their sequence of DNA bases. These small differences contribute to each person’s ...
    https://medlineplus.gov/genetics/understanding/basics/gene - Genetics
  3. What is noninvasive prenatal testing (NIPT) and what disorders can it screen for?: MedlinePlus Genetics 
    ... usually contain fewer than 200 DNA building blocks (base pairs) and arise when cells die off and ...
    https://medlineplus.gov/genetics/understanding/testing/nipt - Genetics