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One of the molecules that form DNA and RNA molecules.
See also: nucleotide, base pair, base sequence.
Industry:Biology
Twins produced by the division of a single zygote; both have identical genotypes.
See also: fraternal twin.
Industry:Biology
Two nitrogenous bases (adenine and thymine or guanine and cytosine) held together by weak bonds. Two strands of DNA are held together in the shape of a double helix by the bonds between base pairs..
Industry:Biology
A sequence of DNA similar to a gene but nonfunctional; probably the remnant of a once-functional gene that accumulated mutations..
Industry:Biology
Using the immune system to treat disease, for example, in the development of vaccines. May also refer to the therapy of diseases caused by the immune system.
See also: cancer.
Industry:Biology
The order of nucleotide bases in a DNA molecule; determines structure of proteins encoded by that DNA..
Industry:Biology
A nitrogen-containing, double-ring, basic compound that occurs in nucleic acids. The purines in DNA and RNA are adenine and guanine.
See also: base pair.
Industry:Biology
A phenomenon in which the disease phenotype depends on which parent passed on the disease gene. For instance, both Prader-Willi and Angelman syndromes are inherited when the same part of chromosome 15 is missing. When the father's complement of 15 is missing, the child has Prader-Willi, but when the mother's complement of 15 is missing, the child has Angelman syndrome..
Industry:Biology
A method, sometimes automated, for determining the base sequence..
Industry:Biology
