Know what these words mean in order to score high on tests.
Cell Cycle Definition Cell Cycle: Definition from Answers.com
The series of events involving the growth, replication, and division of a eukaryotic cell.
Scroll down for videos and encyclopedia article.
http://www.answers.com/topic/cell-cycle
Cell Cycle DefinitionCell Cycle,
Dictionary.com,
"the cycle of growth and asexual reproduction of a cell." Visit the web site for more.
http://dictionary.reference.com/browse/cell+cycle
Cell division
Cell division
Wikipedia.org
Good explanation of cell division; click on image to enlarge.
http://en.wikipedia.org/wiki/Cell_division
Cell Division Definition Cell Division Definition,
BiologyOnline.org,
"The separation of one cell into two daughter cells, involving both nuclear Division (mitosis) and subsequent cytoplasmic division (cytokinesis)." Vis
http://www.biology-online.org/dictionary/Cell_divi...
CentromereCentromere,
Wikipedia.org,
"A centromere is a region of DNA typically found near the middle of a chromosome where two identical sister chromatids come closest in contact." Visit the web site to le
http://en.wikipedia.org/wiki/Centromere
Centromere DefinitionCentromere Definition,
Biology-Online.org,
Centromere is "the constricted region joining the two sister chromatids that make up an X-shaped chromosome." Visit the web site to learn more.
http://www.biology-online.org/dictionary/Centromer...
Chromatids DefinitionChromatids Definition,
Biology-Online.org,
Chromatids are a part of cell division. Visit the web site to learn more.
http://www.biology-online.org/dictionary/Chromatid...
Cleavage FurrowCleavage Furrow,
Wikipedia.org,
"In cell biology, the cleavage furrow is the indentation that begins the process of cleavage, by which animal and some algal cells undergo cytokinesis."
Visit th
http://en.wikipedia.org/wiki/Cleavage_furrow
Cleavage furrow Definition
Cleavage furrow Definition
Biology-Online.org
A groove formed from the cell membrane in a dividing cell as the contractile ring tightens.
Visit the web site to learn more.
http://www.biology-online.org/dictionary/Cleavage_...
Crossing overCrossing over,
Biology-Online,
"A process occurring during meiosis wherein two chromosomes pair up and exchange segments of their genetic material."
Visit the website for supplemental informati
http://www.biology-online.org/dictionary/Crossing_...
CytokinesisCytokinesis,
Macroevolution.net,
"Although it is one of the steps in the cell cycle, cytokinesis is not one of the phases of mitosis or meiosis." Visit the website for illustration and to learn mo
http://www.macroevolution.net/cytokinesis.html
Cytokinesis
Cytokinesis
Wikipedia.org
Cytokinesis, from the greek cyto- (cell) and kinesis (motion, movement), is the process in which the cytoplasm of a single eukaryotic cell is divided to form two daught
http://en.wikipedia.org/wiki/Cytokinesis
Diploid CellDiploid Cell,
By Batul Nafisa Baxamusa,
Buzzle.com,
Article with image.
http://www.buzzle.com/articles/diploid-cell.html
G1 PhaseG1 Phase,
Wikipedia.org,
"The G1 phase is a period in the cell cycle during interphase, before the S phase." Visit the web site to learn more.
http://en.wikipedia.org/wiki/G1_phase
G1 Phase - What Does it Mean?G1 Phase - What Does it Mean?,
Definitions.net,
Visit the web site for definition and images.
http://www.definitions.net/definition/g1%20phase
G1 Phase DefinitionG1 Phase Definition,
Dictionary.com,
G1 phase is "the first growth period of the cell cycle, during interphase, in which the cell grows and cytoplasmic organelles are replicated." Visit the web s
http://dictionary.reference.com/browse/g1+phase
gametegamete,
By David Darling,
The Internet Encyclopedia of Science,
Brief encyclopedic description.
http://www.daviddarling.info/encyclopedia/G/gamete...
Gamete DefinitionGamete Definition,
Biology-Online.org,
Visit the web site for definition.
http://www.biology-online.org/dictionary/Gametes
GametesGametes,
By Regina Bailey,
ThoughtCo.,
Definition and photo.
https://www.thoughtco.com/gametes-373465
GametogenesisGametogenesis,
Biology-Online.org,
"(Science: biology) process leading to the production of gametes. The development and maturation of sex cells through meiosis."
Visit the website to learn mor
http://www.biology-online.org/dictionary/Gametogen...
Germ Cell DefinitionGerm Cell Definition,
MedicineNet.com,
Germ cell is reproductive cell; read a brief description of it here.
http://www.medterms.com/script/main/art.asp...
gonadgonad,
By David Darling,
The Internet Encyclopedia of Science,
Brief encyclopedic description.
http://www.daviddarling.info/encyclopedia/G/gonad....
Gonad DefinitionGonad Definition,
Biology-Online.org,
"The sex organ producing gametes."
Visit the web site to learn more.
http://www.biology-online.org/dictionary/Gonad
Homologous chromosomeHomologous chromosome,
Wikipedia.org,
"Homologous chromosomes are chromosome pairs of the same length, centromere position, and staining pattern, with genes for the same characteristics at corresp
http://en.wikipedia.org/wiki/Homologous_chromosome
Homologous chromosome DefinitionHomologous chromosome Definition,
Biology-Online.org,
Visit the website for definition.
http://www.biology-online.org/dictionary/Homologou...
Interphase Definition
Interphase Definition
Answers.com
n.
The stage of a cell between two successive mitotic or meiotic divisions.
Visit the web site to learn more.
http://www.answers.com/topic/interphase
Interphase DefinitionInterphase Definition,
Dictionary.com,
"the period of the cell cycle during which the nucleus is not undergoing division, typically occurring between mitotic or meiotic divisions." Visit the web s
http://dictionary.reference.com/browse/interphase
Kinetochore DefinitionKinetochore Definition,
Biology-Online.org,
"{A specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape. Visit the web
http://www.biology-online.org/dictionary/Kinetocho...
Meiosis
Meiosis
Wikipedia.org
Text and illustrations on meiosis; click on image to enlarge.
http://en.wikipedia.org/wiki/Meiosis
meiosis
meiosis
By David Darling
DavidDarling.info
Encyclopedia article on meiosis, with illustration.
http://www.daviddarling.info/encyclopedia/M/meiosi...
MeiosisMeiosis
Infoplease.com
Short encyclopedia article.
https://www.infoplease.com/encyclopedia/science-an...
Meiosis
Meiosis
Scitable
By Nature Education
Text and small illustration explaining meiosis.
http://www.nature.com/scitable/definition/meiosis-...
Meiosis IIMeiosis II,
By Regina Bailey,
ThoughtCo.,
"An introduction to the process of meiotic cell division focusing on meiosis II."
https://www.thoughtco.com/stages-of-meiosis-373512
Metaphase plate DefinitionMetaphase plate Definition,
Biology-Online.org,
Find out what the metaphase plate is here.
http://www.biology-online.org/dictionary/Metaphase...
Mitosis
Mitosis
Wikipedia.org
Article describing cell division in eukaryotic cells; click on images to enlarge.
http://en.wikipedia.org/wiki/Mitosis
mitosis
mitosis
By David Darling
DavidDarling.info
Encyclopedia article, with illustration, on mitosis.
http://www.daviddarling.info/encyclopedia/M/mitosi...
Mitosis
Mitosis
Web-books.com
Excellent illustrations and explanations of the stages.
http://www.web-books.com/MoBio/Free/Ch8B.htm
Nondisjunction
Nondisjunction
Wikipedia.org
Nondisjunction ("not coming apart") is the failure of chromosome pairs to separate properly during cell division.
Visit the website to learn more.
http://en.wikipedia.org/wiki/Nondisjunction
Nondisjunction ExplainedNondisjunction Explained,
Uploaded pykeman88,
March 08, 2010,
YouTube.com,
Video length: 03:52.
http://www.youtube.com/watch...
Oogenesis
Oogenesis
Wikipedia.org
Article with diagrams.
http://en.wikipedia.org/wiki/Oogenesis
Oogenesis
Oogenesis
Answers.com
Find a definition and supplemental information from McGraw-Hill.
http://www.answers.com/topic/oogenesis
Oogenesis Definition
Oogenesis Definition
Lexic.us
Definitions and pictures; click on thumbnail for larger version.
http://www.lexic.us/definition-of/oogenesis
Polar BodiesPolar Bodies,
Wikipedia.org,
"A polar body is a cell structure found inside an ovum. Both animal and plant ova possess it. It is also known as a polar cell."
Visit the website for an image and
http://en.wikipedia.org/wiki/Polar_body
ProphaseProphase
Wikipedia.org
All-text article on the first stage of mitosis.
http://en.wikipedia.org/wiki/Prophase
Prophase DefinitionProphase Definition,
The Free Dictionary,
By Farlex,
Prophase is the first stage of mitosis. Read more about it here.
http://www.thefreedictionary.com/prophase
Sister chromatids
Sister chromatids
Wikipedia.org
Sister chromatids are two identical copies of a chromatin connected by a centromere.
Visit the web site to learn more.
http://en.wikipedia.org/wiki/Sister_chromatids
Sister chromatids DefinitionSister chromatids Definition,
Biology-Online.org,
"Two identical strands joined by a common centromere as a result of a chromosome that duplicated during the S phase of the cell cycle." Visit the
http://www.biology-online.org/dictionary/Sister_ch...
Spindle fiber DefinitionSpindle fiber Definition,
Biology-Online.org,
Spindle fibers is "any of a network of filaments that collectively form a mitotic spindle (in mitosis) and meiotic spindle (in meiosis)." Visit the w
http://www.biology-online.org/dictionary/Spindle_f...