Uracil
A nitrogenous base normally found in RNA but not DNA; uracil is capable of forming a base pair with adenine.
See also: base pair, nucleotide
See: cloning vector
A noncellular biological entity that can reproduce only within a host cell. Viruses consist of nucleic acid covered by protein; some animal viruses are also surrounded by membrane. Inside the infected cell, the virus uses the synthetic capability of the host to produce progeny virus.
See also: cloning vector
A technique used to identify and locate proteins based on their ability to bind to specific antibodies.
See also: DNA, Northern blot, protein, RNA, Southern blotting
The form of an organism that occurs most frequently in nature.
See: Draft DNA Sequence
One of the two sex chromosomes, X and Y.
See also: Y chromosome, sex chromosome
Tissue or organs from an individual of one species transplanted into or grafted onto an organism of another species, genus, or family. A common example is the use of pig heart valves in humans.
One of the two sex chromosomes, X and Y.
See also: X chromosome, sex chromosome
Yeast artificial chromosome (YAC)
Constructed from yeast DNA, it is a vector used to clone large DNA fragments.
See also: cloning vector, cosmid
A secondary feature of some proteins containing a zinc atom; a DNA-binding protein.
