cleavagedivision of a
zygote into
cells known as
blastomeresSource: Noland, George B. 1983. General
Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
Full article >>>Cleavage[Anglo-Saxon cleofian - to cut, divide]. The process of
cell division in the
zygote to form a multicellular
embryo.
Full article >>>complete
cleavage - major pattern of
embryonic
cell divison in which
cytokinesis completely separates
cells during
division; it is typically seen in smaller eggs containing moderate (mesolecithal) to sparse (isolecithal)
yolk.
Full article >>>Cleavage is the first step in development of ALL multicelled
organisms.
Cleavage converts a single-celled
zygote into a multicelled
embryo by
mitosis. Usually, the zygotic
cytoplasm is divided among the newly formed
cells.
Full article >>>Cleavage Patterning
Differentiation Growth
CleavageMitosis and
cytokinesis of the
zygote, an unusually large
cell, produces an increasing number of smaller
cells, each with an exact copy of the
genome present in the
zygote.
Full article >>>cleavage furrow
The first sign of
cleavage in an
animal cell; a shallow groove in the
cell surface near the old
metaphase plate.
cline ...
Full article >>>cleavage The process of
cytokinesis in
animal cells,
characterized by pinching of the
plasma membrane; also, the succession of rapid
cell divisions without growth during early
embryonic development that converts the
zygote into a ball of
cells.
Full article >>>cleavage The early mitotic and
cytoplasmic
divisions of an
embryo.
Cleido- Key, clavicle.
climacteric rise A point during the ripening process of certain fruit when the
respiration rates rise to very high levels.
Full article >>>RNA cleavage is needed to process tandem
repeats produced by
rolling circle RNA replicationFacts
RNA cleavage.
Full article >>>Sites of
cleavageRather than cutting
DNA indiscriminately, a restiction
enzyme cuts only double-helical
segments that contain a particular
nucleotide sequence, ...
Full article >>>Sites of
cleavageRather than cutting
DNA indiscriminately, a
restriction enzyme cuts only double-helical
segments that contain a particular
nucleotide sequence, ...
Full article >>>discoidal
cleavage - incomplete
division of the blastodisc, a region of
yolk-free, active
cytoplasm;
characteristic of birds, fishes and reptiles.
Full article >>>The specific
cleavage of a
downstream flap has been employed as an extremely sensitive, quantitative, and highly specific assay for the detection of target
DNA both alone and in mixture of extraneous
DNA.
Full article >>>Restriction The
cleavage of double-
stranded
DNA by an
endonuclease (
restriction enzyme). The
restriction enzyme distinguishes between self and foreign
DNA based upon the
modification of its
DNA-
binding site (for example, by
methylation).
Full article >>>by Sanger,
DNA is synthesized in vitro in such a way that it is radioactively labeled and the re
action terminates specifically at the position corresponding to a given
base; the "chemical" method, ss
DNA is subjected to several chemical
cleavage ...
Full article >>>A re
action in which a
molecule of water is added at the
site of
cleavage of a
molecule to two products. I Immortalizing
oncogene. A
gene that upon
transfection enables a primary
cell to grow indefinitely in
culture.
Full article >>>phosphoro
lysis Cleavage of a
compound with phosphate as the attacking group: analogous to
hydrolysis.
phosphorylation Formation of a phosphate derivative of a bio
molecule, most often by enzymatic
transfer of a
phosphate group from
ATP.
Full article >>>The roles of different proteolytic
enzymes in this process can be determined from the sites of
cleavage in the aggrecan core
protein, which generates novel termini (neoepitopes).
Full article >>>One of the most common of these
cleavages is the removal of specific signal
peptides. These
peptides target
proteins for
transport to a particular cellular
organelle in a process known as
protein sorting.
Full article >>>It is also unique among model
organisms in that
cleavage occurs in a
syncytium.
Full article >>>RESTRICTION ENDONUCLEASE - A
bacterial
enzyme which recognizes a specific
palindromic sequence (recognition
sequence) within a double-
stranded
DNA molecule and then catalyzes the
cleavage of both
strands at that
site. Also called a
restriction enzyme.
Full article >>>Cytokinesis (
division of the
cytoplasm) begins in
anaphase. A
cleavage furrow forms as
actin filaments underneath the
plasma membrane constrict in a
band called the contractile ring. Two
cells will be produced as this process continues.
Telophase ...
Full article >>>restriction map - diagrammatic representation of a
DNA molecule indicating the sites of
cleavage by various
restriction enzymes ...
Full article >>>Restriction fragment length
polymorphisms (
RFLP) are
variation in
DNA fragment banding patterns of electrophoresed
restriction digests of
DNA from different individuals of a
species. Often due to the presence of a
restriction enzyme cleavage site at ...
Full article >>>Restriction enzymes : An
endonuclease enzyme, isolated from
bacteria, that recognizes specific
base-pair
sequences within
DNA and causes endonucleolytic
cleavage of the
DNA at a
site determined by the recognized
DNA sequences.
Full article >>>Post-
translational
processing: The reactions which alter a
protein's covalent structure, such as
phosphorylation,
glycosylation or proteolytic
cleavage.
Full article >>>'"/>