Different alleles produce variations in inherited characteristics such as eye color or blood type.
Used to refer to making many copies of DNA, usually by replication of a recombinant plasmid in a bacterium. The term is also used to refer to making many genetically identical copies of an organism. DNA strands in which every T in one strand is matched by an A at the corresponding position in the other strand and every G is matched with a corresponding C in the other strand. Usually done by heating. This information is encoded in the sequence of bases arrayed along the length of the DNA molecule.