Cell division is the biological basis of life. For simple
unicellular organisms such as the
Amoeba, one
cell division reproduces an entire
organism.
Full article >>>Cell Division and the
Cell Cycle (University of Alberta): Similar to this page, but with its own glossary and questions.
Amoeba Proteus
Mitosis Small photomicrographs of
protistan
mitosis.
Full article >>>Cell divisionRelated Terms:
MitosisThe most frequent process of nuclear
division (
karyokinesis) in
cells that produces
daughter cells that are genetically identical to each other and to the parent
cell.
Full article >>>Cell division does not happen until damage is repaired.
Transcription signals a
strand-preferential repair.
Recombination and
DNA repair can be induced by
DNA damage.
Full article >>>Cell Divisionimage credit: Conly Rieder and Alexey Khodjakov, Wadsworth Center, Albany, New York; Rieder@Wadsworth.org. THIS IMAGE CANNOT BE REPRINTED WITHOUT PERMISSION FROM THE PERSON LISTED ABOVE.
Full article >>>Cell division in multicellular
organisms enables the
organism to grow larger while the
cells remain small. A large surface:volume ratio is due to small
cell size.
Full article >>>Cell division was
originally appreciated primarily from a microscopic observation. You could see things happening and you could see primarily the
chromosomes of the
cell that contain the
DNA, condensing at one time in the
cell cycle and
segregating.
Full article >>>Cell division involves a single
cell (called a mother
cell) dividing into two
daughter cells. This leads to growth in multicellular
organisms (the growth of
tissue) and to procreation (vegetative
reproduction) in
unicellular organisms.
Full article >>>Lab 4
Cell Division Lab 14
Gametogenesis and Development
haploid gametophyteThe part of the life cycle of
plants having
haploid nuclei and giving rise to the
sex cells that on fusing produce a
diploid stage, usually the
sporophyte.
Full article >>>somatic cell division resulting in two
daughter cells, each with the same
chromosome complement as the parent
cellSource: Jenkins, John B. 1990.
Human Genetics, 2nd Edition. New York: Harper & Row
What Topic Is Your
BIOLOGY Paper On?
Full article >>>meiotic
Cell division that reduces the number of
chromosomes from
diploid to
haploid.
Meissner'scorpuscles Tactile sensory
receptors in the
superficial dermis.
melanin Black or dark-brown
pigment found in
plant or
animal structures.
Full article >>>The type of
cell division by which
prokaryotes reproduce; each dividing
daughter cell receives a copy of the single parental
chromosome.
binomial
[L. bi, twice, two + Gk. nomos, usage, law] ...
Full article >>>interphase: the
cell division cycle phase in which the
cell spends most of its time; includes G1, S phase (
DNA replication), and G2.
invertebrates: the most primitive of the
chordates; lack a backbone.
Full article >>>A
serum protein that stimulates
cell division when it binds to its
cell-surface
receptor. Growth phase (curve). The
characteristic periods in the growth of a
bacterial
culture, as indicated by the shape of a graph of viable
cell number versus time.
Full article >>>So that it replicates and is segregated during
cell division in the same way as a normal
chromosome. The main uses are in preparation of genomic libraries since very large
inserts (in the Mbp range) can be integrated.
Full article >>>This involves
cell division,
cell migration, and the
differentiation of
cells into the many types found in the baby.
Full article >>>meiosis -- A two-stage type of
cell division in
sexually reproducing
organisms. In
meiosis, a
diploid cell divides to produce four
haploid cells, each with half the
original
chromosome content.
Full article >>>Two successive nuclear
divisions (with corresponding
cell divisions) that produce
haploid gametes (in
animals) or
haploid sexual spores (in
plants and
fungi) having one-half of the
genetic material of the
original
cell.
Full article >>>The number of
mutations per
cell division. The
mutation rate can be determined from a Luria-Dulbruck fluctuation ana
lysis. Sometimes the mutant frequency is described instead of
mutation rate.
Full article >>>Meiosis: the process of
cell division in which a single
cell produces four
daughter cells each of which contains half of the number of
chromosomes of the parent
cell.
Full article >>>mitosis The multistep process (
interphase,
prophase,
metaphase,
anaphase,
telophase) in eukaryotic
cells that results in the
replication of
chromosomes and
cell division.
Full article >>>The phase of
mitosis, or
cell division, when the
chromosomes align along the center of the
cell. Because
metaphase chromosomes are highly condensed, scientists use these
chromosomes for
gene mapping and identifying chromosomal aberrations.
explained: ...
Full article >>>The process of
cell division in the
zygote to form a multicellular
embryo. There is usually no growth of
cells (
blastomeres) at this time so the
cells decrease in volume by about 50% with each subsequent
division.
Full article >>>Definition: A two-part
cell division process in
organisms that
sexually reproduce, which results in
gametes with one-half the number of
chromosomes of the parent
cell.
Related Resources:
Genetics Glossary
Glossary of common
genetics terms.
Full article >>>Centromere: A specialized constricted region of a
chromosome to which
spindle fibers attach during
cell division at which two
sister chromatids (the two exact copies of each
chromosome that are formed after
replication) are joined, ...
Full article >>>parthenogenesis - special reproductive strategy in which unfertilized eggs undergo
cell division and
embryogenesis to develop into viable adult individuals ("virgin birth").
Full article >>>In
mitosis,
phosphorylation of structural
proteins by Cdk1 (cyclin-dependent
kinase 1)-cyclin B, Polo-like and mitogen-activated
protein kinases underlie changes in Golgi reorganization during
cell division.
Full article >>>Meiosis: The production of se x
cells, which are not genetically identical, through a series of
cell divisions. Compare to
mitosis.
Messenger RNA (m
RNA): A single-
stranded
molecule of
ribonucleic acid that directs
protein production.
Full article >>>Note that for
humans, the number of
cell divisions prior to
sperm formation in a male of age 30 is about 400. This works out to about 1.6
mutations per
sperm cell.
Full article >>> Meiosis a special
cell division resulting in
sex cells with half as many
chromosomes (meio = less; -sis = the act of) ...
Full article >>>meristem. The collection of
cells at the growing point of a
plant that are capable of
cell division.
metamorphosis. The change in form that takes place as insects grow from immatures to adults.
Full article >>>- All the
cells derived from a single
cell by repeated
cell division and having the same genetic constitution.
Cnidaria
: See
Coelamata
.
Full article >>>A second type of
cloning exploits the natural process of
cell division to make many copies of an entire
cell. The genetic makeup of these
cloned
cells, called a
cell line, is identical to the
original
cell.
Full article >>>Note that putrescine is synthesized by healthy living
cells by the
action of ornithine decarboxylase. The polyamines, of which putrescine is one of the simplest, appear to be growth factors necessary for
cell division.
See also
Cadaverine ...
Full article >>>'"/>