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In 2005, the New York Times described target letters this way: "The U.S. attorney's manual bars prosecutors from taking witnesses before a grand jury if there is a possibility of future criminal charges unless the witnesses are notified in advance that their grand jury testimony can be used against them in a later indictment."
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Also called functionalism. The Darwinian view that many or most physiological and behavioral traits of organisms are adaptations that have evolved for specific functions or for specific reasons (as opposed to being byproducts of the evolution of other traits, consequences of biological constraints, or the result of random variation). adaptive radiation The simultaneous or near-simultaneous ...
Glossary of cellular and molecular biology (M–Z) (this page) lists terms beginning with the letters M through Z. This glossary is intended as introductory material for novices (for more specific and technical detail, see the article corresponding to each term).
The term "biological target" is frequently used in pharmaceutical research to describe the native protein in the body whose activity is modified by a drug resulting in a specific effect, which may be a desirable therapeutic effect or an unwanted adverse effect. In this context, the biological target is often referred to as a drug target.
A chimeric mouse gene targeted for the agouti coat color gene, with its offspring. Gene targeting is a biotechnological tool used to change the DNA sequence of an organism (hence it is a form of Genome Editing).
Written Definitions: Each glossary entry has a written definition that has been reviewed for clarity and accuracy by teams of science educators and genetic researchers. All of the definitions were written by the same Ph.D.-level science writer for consistency and accuracy. Illustrations:
3' untranslated region (3'-UTR). Also three-prime untranslated region, 3' non-translated region (3'-NTR), and trailer sequence.. 3'-end. Also three-prime end.. One of two ends of a single linear strand of DNA or RNA, specifically the end at which the chain of nucleotides terminates at the third carbon atom in the furanose ring of deoxyribose or ribose (i.e. the terminus at which the 3' carbon ...