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In viruses and bacteriophages, the DNA or RNA is surrounded by a protein capsid, sometimes further enveloped by a lipid membrane.Double-stranded DNA is stored inside the capsid in the form of a spool, which can have different types of coiling leading to different types of liquid-crystalline packing.
Heterochromatin vs. euchromatin. Chromatin is found in two varieties: euchromatin and heterochromatin. [7] Originally, the two forms were distinguished cytologically by how intensely they get stained – the euchromatin is less intense, while heterochromatin stains intensely, indicating tighter packing.
Packing different rectangles in a rectangle: The problem of packing multiple rectangles of varying widths and heights in an enclosing rectangle of minimum area (but with no boundaries on the enclosing rectangle's width or height) has an important application in combining images into a single larger image. A web page that loads a single larger ...
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 ...
In general, one helix is smaller, and due to the flexibility of this loop, allows dimerization by folding and packing against another helix. The larger helix typically contains the DNA-binding regions. bHLH proteins typically bind to a consensus sequence called an E-box, CANNTG. [7]
Packing is wearing padding or a phallic object in the front of the pants or underwear to give the appearance of having a penis [1] or bulge. [2] Packing is commonly practiced by trans men . People who cross-dress as male may also "pack".
Packing (phallus), the practice of wearing a phallic object inside the clothing to give the appearance of male genitals; Packing, in autism therapy, wrapping children in cold wet sheets; Packing, also known as an O-ring or other type of mechanical seal, a term for a sealing material; Packing problems, a family of optimization problems in ...
In biology, a gene cassette is a type of mobile genetic element that contains a gene and a recombination site. Each cassette usually contains a single gene and tends to be very small; on the order of 500–1,000 base pairs. They may exist incorporated into an integron or freely as circular DNA. [1]