Strains
Model of successive
binary fission in E. coli
A "
strain" of E. coli is a
family with some particular
characteristics that make it recognizable from other E.
Full article >>>Strains of HIV (designated "R5") bind the co
receptor CCR5. These are the
strains that are most infectious.
Strains of HIV (designated "X4") bind the co
receptor CXCR4.
Full article >>>StrainPure
culture of microorganisms composed of the descendants of a single
cell.
Related Terms:
Progeny ...
Full article >>>StrainAn
organism that is different from other
organisms of the same
species due to genetic differences.
Full article >>>A
strain of
organisms that will proliferate on minimal medium (compare auxotroph).
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>Two
strains of
Drosophila paulistorum developed
hybrid sterility of male
offspring between 1958 and 1963. Artificial
selection induced strong intra-
strain mating preferences.
Full article >>>Flu
strains are named after their types of hemagglutinin and neuraminidase surface
proteins , so they will be called, for example, H3N2 for type-3 hemagglutinin and type-2 neuraminidase.
Full article >>>The
strain used in this study does not cause disease, but related toxic
strains have been associated with an increasing number of
human food poisonings.
Full article >>>The
strain of
parasite that we are using in the malaria
genome project actually was
originally obtained from an individual who lived near an airport in Amsterdam.
Full article >>>Host strain (
bacterial): The bacterium used to harbor a
plasmid. Typical
host strains include HB101 (general purpose E. coli
strain), DH5a (ditto), JM101 and JM109 (suitable for growing M13
phages), XL1-Blue (general-purpose, ...
Full article >>>biotype. A
strain of a
species that has certain biological
characters separating it from other individuals of that
species.
blackarm.
Bacterial blight lesions on stems.
blank. Nut with no kernel-consists of only the collapsed pellicle (skin).
Full article >>>a
homozygous strain produced by
inbreedingSource: Jenkins, John B. 1990.
Human Genetics, 2nd Edition. New York: Harper & Row
What Topic Is Your
BIOLOGY Paper On?
Full article >>>1. The dead S
strain had been reanimated/resurrected.
2. The Live R had been
transformed into Live S by some "
transforming factor".
Further experiments led Griffith to conclude that number 2 was correct.
Full article >>>Ecotype a genetic
strain of a
population that is adapted to the unique local
environmental conditions
(eco oikus = house) ...
Full article >>>Another influential
strain of Islamist thought came from the Wahhabi movement in Saudi Arabia.
Full article >>>Auxotrophic mutant A
bacterial
strain which has a
mutation in at least one of the
enzymes in a
biochemical pathway responsible for synthesising an essential substance, for example an
amino acid.
Full article >>>Strains of fd can be distinguished based on the E.coli
strain from which they were isolated: fd K from E.coli K and fd B from E.coli B.
The results of
plaque assays of fd K on each E.coli K and E. coli B are diagrammed.
Full article >>>This is achieved by superimposing the
locus of interest on the genetic background of another by first
crossing two inbred lines followed by extensive (about 20 generations)
backcrossing
hybrids to one parental line (the background
strain) while ...
Full article >>>He observed that heat-killed S
strain bacteria injected into mice did not kill them. When he injected a mixture of heat-killed S and live R
bacteria, the mice died. Moreover, he recovered living S
bacteria from the carcasses.
Full article >>>A group of planktonic
tunicates that secrete a gelatinous house, used to
strain unsuitable particles (large particles are rejected).
Full article >>>Strains of mice having natural
mutations similar to
human ones may serve as models of such conditions. Scientists can also create
mouse models by
transferring new genes into mice or by inactivating certain existing genes in them.
Full article >>>stress Physical, chemical, or emotional factors that place a
strain on an
animal.
Plants also experience physiological stress under adverse
environmental conditions.
stress-related disease See stress shock.
Full article >>>In primitive
chordates the pharyngeal slits are used to
strain water and filter out food particles; in fishes they are modified for
respiration. Most terrestrial
vertebrates have pharyngeal slits only in the
embryonic stage.
Full article >>>Insect resistant (
plants): Tolerant of, or resistant to, insect attack (as in
plants). individuals from
strains whose ancestors had not been exposed to the pesticide.
Full article >>>Nicked circle (relaxed circle). During extr
action of
plasmid DNA from the
bacterial
cell, one
strand of the
DNA becomes nicked. This relaxes the torsional
strain needed to maintain
supercoiling, producing the familiar form of
plasmid. (See
Plasmid.) ...
Full article >>>A
nutritional mutant that is unable to synthesize and that cannot grow on media lacking certain essential
molecules normally synthesized by
wild-type strains of the same
species.
Aves ...
Full article >>>We have embarked on a detailed study of the structure and mechanism of PETN reductase from a
strain of Enterobacter
cloacae.
Full article >>>This relaxes the torsional
strain needed to maintain
supercoiling, producing the familiar form of
plasmid. (See
Plasmid.) NIH. See National Institutes of Health. Nitro
cellulose.
Full article >>>Tumor suppressor gene -- genes that normally function to re
strain the growth of
tumors; the best understood case is for
hereditary retinobla
stoma.
Full article >>>'"/>