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One gene that causes many different physical traits such as multiple disease symptoms..
Industry:Biology
Use of flow cytometry to analyse and separate chromosomes according to their DNA content..
Industry:Biology
Any of a class of 20 molecules that are combined to form proteins in living things. The sequence of amino acids in a protein and hence protein function are determined by the genetic code..
Industry:Biology
The potential of a cell to develop into more than one type of mature cell, depending on environment..
Industry:Biology
A physical mapping approach that uses fluorescein tags to detect hybridization of probes with metaphase chromosomes and with the less-condensed somatic interphase chromatin..
Industry:Biology
An increase in the number of copies of a specific DNA fragment; can be in vivo or in vitro.
See also: cloning, polymerase chain reaction.
Industry:Biology
Genetic disorder resulting from the combined action of alleles of more than one gene (e.g., heart disease, diabetes, and some cancers). Although such disorders are inherited, they depend on the simultaneous presence of several alleles; thus the hereditary patterns usually are more complex than those of single-gene disorders.
See also: single-gene disorder.
Industry:Biology
The use of DNA for identification. Some examples of DNA use are to establish paternity in child support cases; establish the presence of a suspect at a crime scene, and identify accident victims..
Industry:Biology
A method for amplifying a DNA base sequence using a heat-stable polymerase and two 20-base primers, one complementary to the (+) strand at one end of the sequence to be amplified and one complementary to the (-) strand at the other end. Because the newly synthesised DNA strands can subsequently serve as additional templates for the same primer sequences, successive rounds of primer annealing, strand elongation, and dissociation produce rapid and highly specific amplification of the desired sequence. PCR also can be used to detect the existence of the defined sequence in a DNA sample..
Industry:Biology
Siblings born at the same time as the result of fertilisation of two ova by two sperm. They share the same genetic relationship to each other as any other siblings.
See also: identical twin.
Industry:Biology
