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Top competitors on query "in some organisms mitosis occurs without cytokinesis. this will result in"
http://www.pbs.org/wgbh/nova/body/how-cells-divide.html Competition: low
Launch Interactive Printable Version Explore the stages of two types of cell division, mitosis and meiosis, and how these processes compare to one another. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction) and altered it to allow two parent cells to combine to create offspring (sexual reproduction)
nutrition: Definition, Synonyms from Answers.com
http://www.answers.com/topic/nutrition Competition: low
It has been estimated that more than 80 million cases of food-borne illness occur annually in the United States, resulting in more than 9,000 deaths, primarily from microbiological contamination. Furthermore, depending on the location of the double-bond in the fatty acid chain, unsaturated fatty acids are classified as omega-3 or omega-6 fatty acids
Science Experiments on Environmental Education and Biology
http://www.funsci.com/fun3_en/exper1/exper1.htm Competition: low
Now, imagine that a particularly active shrimp eats all the algae of its biosphere? What would happen? Probably, the oxygen would be subtracted by many processes, and since there is no more algae to produce more, the shrimp would die, suffocated. It is a question of simply putting water in an aquarium, collected from a natural pond and adding some animals and plants collected in the same environment like: water snails, little fresh water shellfishes, boatflies, whirligigs, larvae of dragonfly, nymphs of aquatic bugs, prawns, etc
http://www.biologyjunction.com/lab_3_sample_ap_mitosis__meiosis.htm Competition: low
However, if the asci has black and tan ascospores in sets of two (2:2:2:2 arrangement) or two pairs of black ascospores and four tan ascospores in the middle (2:4:2 arrangement), then crossing over had taken place. If your observations had not been restricted to the area of the root tip that is actively dividing, how would your results differ? There would be virtually no cells undergoing division, so many more of the cells observed would have been in interphase where they elongate an differentiate
http://www.amazingscienceonline.com/mitosis-and-meiosis Competition: low
So if you can provide a link to the original image or even the credits (author, title, URL) and confirmation that I have permission to use the image that would be great
http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells2.html Competition: low
Cdk (cyclin dependent kinase, adds phosphate to a protein), along with cyclins, are major control switches for the cell cycle, causing the cell to move from G1 to S or G2 to M
What are the most common phase(s) in mitosis? - Yahoo!7 Answers
http://au.answers.yahoo.com/question/index?qid=20061022213040AAoVN9m Competition: low
A number of nonkinetochore microtubules find and interact with corresponding nonkinetochore microtubules from the opposite centrosome to form the mitotic spindle. The nonkinetochore microtubules elongate, pushing the centrosomes (and the set of chromosomes to which they are attached) apart to opposite ends of the cell
1.3.1 The Cell Cycle and Mitosis
http://cnx.org/content/m43135/latest/ Competition: low
Mitotic Index Figure 5 The duration of each stage of mitosis has been recorded and the data (see table below) could be used to compare the observed frequencies of the different stages as recorded by students. Add to Favorites x Add module to: My Favorites Login Required (What is My Favorites?) 'My Favorites' is a special kind of lens which you can use to bookmark modules and collections
2.5 Cell Cycle and Mitosis PPT
http://www.slideshare.net/fernandasilva/25-cell-cycle-and-mitosis-ppt Competition: low
Tumors often lack sharp boundaries for easy removal, and metastatic tumors can be very small and anywhere in the body.Radiation and chemotherapy are aimed at killing actively dividing cells, but killing all dividing cells is lethal: you must make new blood cells, skin cells, etc
http://uk.answers.yahoo.com/question/index?qid=20061208123105AAF68PD Competition: low
The cell goes through dramatic changes in ultrastructure, its organelles disintegrate and reform in a matter of hours, and chromosomes are jostled constantly by probing microtubules. These sister chromatids turned sister chromosomes are pulled apart by shortening kinetochore microtubules and toward the respective centrosomes to which they are attached
Online Biology Dictionary - C
http://www.macroevolution.net/biology-dictionary-cace.html Competition: low
cabinet of curiosities In Renaissance Europe, a private collection of remarkable or unusual objects, which were typically, but not exclusively of natural origin. cloning vector A virus, plasmid, bacteriophage, chromosome, or eukaryotic cell used to carry and replicate a DNA sequence of interest so that more copies of that DNA can be produced; also can be used for producing the protein product of a particular DNA sequence
http://in.answers.yahoo.com/question/index?qid=20080204011734AAbR6dL Competition: low
There are two kinetochores on each replicated chromosome (one on each chromatid), and when the replicated chromosome splits apart at its centromere at the onset of anaphase, each daughter chromosome possesses one centromere and one kinetochore. A mitotic mother cell can be either haploid or diploid The number of chromosomes per nucleus remains the same after division Mitosis is preceeded by a S-phase in which the amount of DNA is duplicated Normally no pairing of homolog chromosomes Normally no exchange of DNA (crossing-over) between chromosomes The centromeres are split during anaphase Conservative process: the genotype of the daughter cells is identical to that of the mother cells MEIOSIS In reproductive cells Two divisions of the mother cell result in four meiotic products A meiotic mother cell (meiocyte) is always diplod
What would happen if a cell underwent mitosis but not cytokinesis
http://wiki.answers.com/Q/What_would_happen_if_a_cell_underwent_mitosis_but_not_cytokinesis Competition: low
Answer History Related Answers: What would happen if a cell underwent mitosis but not cytokinesis? If the cell underwent mitosis without cytokinesis, the cell would have a double set of chromosomes i What would happen to cell if mitosis occurred without cytokinesis? You would end up with a cell that contained more than one nucleus
Cell Division
http://www.uic.edu/classes/bios/bios100/lecturesf04am/lect16.htm Competition: low
Regulation of the Cell Cycle The cell cycle is controlled by a cyclically operating set of reaction sequences that both trigger and coordinate key events in the cell cycle The cell-cycle control system is driven by a built-in clock that can be adjusted by external stimuli (chemical messages) Checkpoint - a critical control point in the cell cycle where stop and go-ahead signals can regulate the cell cycle Animal cells have built-in stop signals that halt the cell cycles and checkpoints until overridden by go-ahead signals. Telophase The chromosomes decondense The nuclear envelope forms Cytokinesis reaches completion, creating two daughter cells Compare Telophase to the Telophase I and to the Telophase II stages of mitosis
Mitosis - New World Encyclopedia
http://www.newworldencyclopedia.org/entry/Mitosis Competition: low
Errors in the prior replication of the genome or the process of separating the cell into two halves can have serious consequences for the organism and its offspring. Early prometaphase: The nuclear membrane has just degraded, allowing the microtubules to quickly interact with the kinetochores on the chromosomes, which have just condensed
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookglossC.html Competition: low
The electron transport system transfers protons from the inner compartment to the outer; as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP. Water flows across the respiratory surface of the gill in one direction while blood flows in the other direction through the blood vessels on the other side of the surface
Plant Life: Mitosis and Meiosis
http://lifeofplant.blogspot.com/2011/03/mitosis-and-meiosis.html Competition: low
Mitosis produces two cells, called daughter cells, with the same number of chromosomes as the parent cell, and is used to produce new somatic (body) cells in multicellular eukaryotes or new individuals in single-celled eukaryotes. This process results in recombination (the shuffling of linked alleles, the different forms of genes, into new combinations), which results in increased variability in the off spring and the appearance of character combinations not present in either parent
http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20101/Bio%20101%20Lectures/Mitosis/mitosis.htm Competition: low
After the screen opens, press Ctrl-F to view the animation in full screen mode.The Cell CycleThe cell cycle alternates between interphase and mitosis as diagrammed below. At high levels, activation occurs and the cycle resumes.Growth FactorsGrowth factors are molecules that stimulate nearby cells to divide by promoting the binding of cyclin to kinase.Under normal conditions, cyclin combines with kinase only when growth factors are present
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookmito.html Competition: low
The chromosomes (which at this point consist of chromatids held together by a centromere) migrate to the equator of the spindle, where the spindles attach to the kinetochore fibers. Whereas mitosis is the division of the nucleus, cytokinesis is the splitting of the cytoplasm and allocation of the golgi, plastids and cytoplasm into each new cell
http://www.diffen.com/difference/Meiosis_vs_Mitosis Competition: low
Essentially any cell based organism of which all organic life is based will exhibit some form of mitosis and meiosis for growth and reproduction of the individual and species. Meiosis, on the other hand, is a division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell
http://answers.yahoo.com/question/index?qid=20070508202343AAOHI66 Competition: low
Interphase is divided into three phases: Growth 1 (G1) phase: Characterized by increase in cell size due to accelerated manufacture of organelles, proteins, and other cellular matter. (Sex chromosomes, however, are not identical, and only exchange information over a small region of homology.) Exchange takes place at sites where recombination nodules have formed
Cytokinesis - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Cytokinesis Competition: low
A contractile ring, made of non-muscle myosin II and actin filaments, assembles equatorially (in the middle of the cell) at the cell cortex (adjacent to the cell membrane). In plant cells, a dividing structure known as the cell plate forms across the centre of the cytoplasm and a new cell wall forms between the two daughter cells
IUS Biology Faculty Mitosis
http://homepages.ius.edu/GKIRCHNE/Mitosis.htm Competition: low
Metaphase II: The stage at which the chromosomes line up at the equator of the cell and spindle fibers attach to the centromere of each attached sister chromatid. Sexual reproduction involves the recombination of genetic material between two different individuals of the same species to produce a genetically unique offspring
http://www.mansfield.ohio-state.edu/~sabedon/biol1110.htm Competition: low
Perhaps befitting these differences, as well as the generally increased complexity and size of eucaryotic cells relative to procaryotes, eucaryotic cell division is a much more complicated process than the relatively simple binary fission exhibited by many procaryotes. However, the key function of prophase is the development of scaffolding (spindle apparatus) necessary to move sister chromatids about the (now nucleus-less) cell
http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/M/Mitosis.html Competition: low
Anaphase begins when the anaphase promoting complex (APC) destroys securin (by tagging it for deposit in a proteasome) thus ending its inhibition of separase and allowing separase to break down cohesin. Telophase Cytokinesis Mitosis When a eukaryotic cell divides into two, each daughter or progeny cell must receive a complete set of genes (for diploid cells, this means 2 complete genomes, 2n) a pair of centrioles (in animal cells) some mitochondria and, in plant cells, chloroplasts as well some ribosomes, a portion of the endoplasmic reticulum, and perhaps other organelles There are so many mitochondria and ribosomes in the cell that each daughter cell is usually assured of getting some
Mitosis and cytokinesis in plants and animal cells? - Yahoo! Answers
http://answers.yahoo.com/question/index?qid=20071014213545AAlZUTG Competition: low
A contractile ring, comprised of non-muscle myosin II and actin filaments, assembles equatorially (in the middle of the cell) at the cell cortex (adjacent to the cell membrane). In plant cells, a dividing structure known as the cell plate forms across the centre of the cytoplasm and a new cell wall forms between the two daughter cells
Mitosis - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Mitosis Competition: low
A new nuclear membrane, using the membrane vesicles of the parent cell's old nuclear membrane, forms around each set of separated daughter chromosomes (though the membrane does not enclose the centrosomes) The nucleoli reappear, too. A cell inherits a single centrosome at cell division, which is replicated by the cell with the help of the nucleus before a new mitosis begins, giving a pair of centrosomes
http://biology.clc.uc.edu/courses/bio104/mitosis.htm Competition: low
Each of these cultures can be subjected to a different drug, thus enabling doctors to find the right drug sooner, while it may still be of help, and without needlessly subjecting the person to many kinds of toxic chemicals. The nuclear envelope has totally disintegrated and the polar fibers have reached the centromeres of the chromosomes and have begun interacting with them
Launch Interactive Printable Version Explore the stages of two types of cell division, mitosis and meiosis, and how these processes compare to one another. To make the move from asexual to sexual reproduction, nature took a system by which parent cells reproduced simply by dividing (asexual reproduction) and altered it to allow two parent cells to combine to create offspring (sexual reproduction)
nutrition: Definition, Synonyms from Answers.com
It has been estimated that more than 80 million cases of food-borne illness occur annually in the United States, resulting in more than 9,000 deaths, primarily from microbiological contamination. Furthermore, depending on the location of the double-bond in the fatty acid chain, unsaturated fatty acids are classified as omega-3 or omega-6 fatty acids
Science Experiments on Environmental Education and Biology
Now, imagine that a particularly active shrimp eats all the algae of its biosphere? What would happen? Probably, the oxygen would be subtracted by many processes, and since there is no more algae to produce more, the shrimp would die, suffocated. It is a question of simply putting water in an aquarium, collected from a natural pond and adding some animals and plants collected in the same environment like: water snails, little fresh water shellfishes, boatflies, whirligigs, larvae of dragonfly, nymphs of aquatic bugs, prawns, etc
However, if the asci has black and tan ascospores in sets of two (2:2:2:2 arrangement) or two pairs of black ascospores and four tan ascospores in the middle (2:4:2 arrangement), then crossing over had taken place. If your observations had not been restricted to the area of the root tip that is actively dividing, how would your results differ? There would be virtually no cells undergoing division, so many more of the cells observed would have been in interphase where they elongate an differentiate
So if you can provide a link to the original image or even the credits (author, title, URL) and confirmation that I have permission to use the image that would be great
Cdk (cyclin dependent kinase, adds phosphate to a protein), along with cyclins, are major control switches for the cell cycle, causing the cell to move from G1 to S or G2 to M
What are the most common phase(s) in mitosis? - Yahoo!7 Answers
A number of nonkinetochore microtubules find and interact with corresponding nonkinetochore microtubules from the opposite centrosome to form the mitotic spindle. The nonkinetochore microtubules elongate, pushing the centrosomes (and the set of chromosomes to which they are attached) apart to opposite ends of the cell
1.3.1 The Cell Cycle and Mitosis
Mitotic Index Figure 5 The duration of each stage of mitosis has been recorded and the data (see table below) could be used to compare the observed frequencies of the different stages as recorded by students. Add to Favorites x Add module to: My Favorites Login Required (What is My Favorites?) 'My Favorites' is a special kind of lens which you can use to bookmark modules and collections
2.5 Cell Cycle and Mitosis PPT
Tumors often lack sharp boundaries for easy removal, and metastatic tumors can be very small and anywhere in the body.Radiation and chemotherapy are aimed at killing actively dividing cells, but killing all dividing cells is lethal: you must make new blood cells, skin cells, etc
The cell goes through dramatic changes in ultrastructure, its organelles disintegrate and reform in a matter of hours, and chromosomes are jostled constantly by probing microtubules. These sister chromatids turned sister chromosomes are pulled apart by shortening kinetochore microtubules and toward the respective centrosomes to which they are attached
Online Biology Dictionary - C
cabinet of curiosities In Renaissance Europe, a private collection of remarkable or unusual objects, which were typically, but not exclusively of natural origin. cloning vector A virus, plasmid, bacteriophage, chromosome, or eukaryotic cell used to carry and replicate a DNA sequence of interest so that more copies of that DNA can be produced; also can be used for producing the protein product of a particular DNA sequence
There are two kinetochores on each replicated chromosome (one on each chromatid), and when the replicated chromosome splits apart at its centromere at the onset of anaphase, each daughter chromosome possesses one centromere and one kinetochore. A mitotic mother cell can be either haploid or diploid The number of chromosomes per nucleus remains the same after division Mitosis is preceeded by a S-phase in which the amount of DNA is duplicated Normally no pairing of homolog chromosomes Normally no exchange of DNA (crossing-over) between chromosomes The centromeres are split during anaphase Conservative process: the genotype of the daughter cells is identical to that of the mother cells MEIOSIS In reproductive cells Two divisions of the mother cell result in four meiotic products A meiotic mother cell (meiocyte) is always diplod
What would happen if a cell underwent mitosis but not cytokinesis
Answer History Related Answers: What would happen if a cell underwent mitosis but not cytokinesis? If the cell underwent mitosis without cytokinesis, the cell would have a double set of chromosomes i What would happen to cell if mitosis occurred without cytokinesis? You would end up with a cell that contained more than one nucleus
Cell Division
Regulation of the Cell Cycle The cell cycle is controlled by a cyclically operating set of reaction sequences that both trigger and coordinate key events in the cell cycle The cell-cycle control system is driven by a built-in clock that can be adjusted by external stimuli (chemical messages) Checkpoint - a critical control point in the cell cycle where stop and go-ahead signals can regulate the cell cycle Animal cells have built-in stop signals that halt the cell cycles and checkpoints until overridden by go-ahead signals. Telophase The chromosomes decondense The nuclear envelope forms Cytokinesis reaches completion, creating two daughter cells Compare Telophase to the Telophase I and to the Telophase II stages of mitosis
Mitosis - New World Encyclopedia
Errors in the prior replication of the genome or the process of separating the cell into two halves can have serious consequences for the organism and its offspring. Early prometaphase: The nuclear membrane has just degraded, allowing the microtubules to quickly interact with the kinetochores on the chromosomes, which have just condensed
The electron transport system transfers protons from the inner compartment to the outer; as the protons flow back to the inner compartment, the energy of their movement is used to add phosphate to ADP, forming ATP. Water flows across the respiratory surface of the gill in one direction while blood flows in the other direction through the blood vessels on the other side of the surface
Plant Life: Mitosis and Meiosis
http://lifeofplant.blogspot.com/2011/03/mitosis-and-meiosis.html Competition: lowMitosis produces two cells, called daughter cells, with the same number of chromosomes as the parent cell, and is used to produce new somatic (body) cells in multicellular eukaryotes or new individuals in single-celled eukaryotes. This process results in recombination (the shuffling of linked alleles, the different forms of genes, into new combinations), which results in increased variability in the off spring and the appearance of character combinations not present in either parent
After the screen opens, press Ctrl-F to view the animation in full screen mode.The Cell CycleThe cell cycle alternates between interphase and mitosis as diagrammed below. At high levels, activation occurs and the cycle resumes.Growth FactorsGrowth factors are molecules that stimulate nearby cells to divide by promoting the binding of cyclin to kinase.Under normal conditions, cyclin combines with kinase only when growth factors are present
The chromosomes (which at this point consist of chromatids held together by a centromere) migrate to the equator of the spindle, where the spindles attach to the kinetochore fibers. Whereas mitosis is the division of the nucleus, cytokinesis is the splitting of the cytoplasm and allocation of the golgi, plastids and cytoplasm into each new cell
Essentially any cell based organism of which all organic life is based will exhibit some form of mitosis and meiosis for growth and reproduction of the individual and species. Meiosis, on the other hand, is a division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell
Interphase is divided into three phases: Growth 1 (G1) phase: Characterized by increase in cell size due to accelerated manufacture of organelles, proteins, and other cellular matter. (Sex chromosomes, however, are not identical, and only exchange information over a small region of homology.) Exchange takes place at sites where recombination nodules have formed
Cytokinesis - Wikipedia, the free encyclopedia
A contractile ring, made of non-muscle myosin II and actin filaments, assembles equatorially (in the middle of the cell) at the cell cortex (adjacent to the cell membrane). In plant cells, a dividing structure known as the cell plate forms across the centre of the cytoplasm and a new cell wall forms between the two daughter cells
IUS Biology Faculty Mitosis
Metaphase II: The stage at which the chromosomes line up at the equator of the cell and spindle fibers attach to the centromere of each attached sister chromatid. Sexual reproduction involves the recombination of genetic material between two different individuals of the same species to produce a genetically unique offspring
Perhaps befitting these differences, as well as the generally increased complexity and size of eucaryotic cells relative to procaryotes, eucaryotic cell division is a much more complicated process than the relatively simple binary fission exhibited by many procaryotes. However, the key function of prophase is the development of scaffolding (spindle apparatus) necessary to move sister chromatids about the (now nucleus-less) cell
Anaphase begins when the anaphase promoting complex (APC) destroys securin (by tagging it for deposit in a proteasome) thus ending its inhibition of separase and allowing separase to break down cohesin. Telophase Cytokinesis Mitosis When a eukaryotic cell divides into two, each daughter or progeny cell must receive a complete set of genes (for diploid cells, this means 2 complete genomes, 2n) a pair of centrioles (in animal cells) some mitochondria and, in plant cells, chloroplasts as well some ribosomes, a portion of the endoplasmic reticulum, and perhaps other organelles There are so many mitochondria and ribosomes in the cell that each daughter cell is usually assured of getting some
Mitosis and cytokinesis in plants and animal cells? - Yahoo! Answers
A contractile ring, comprised of non-muscle myosin II and actin filaments, assembles equatorially (in the middle of the cell) at the cell cortex (adjacent to the cell membrane). In plant cells, a dividing structure known as the cell plate forms across the centre of the cytoplasm and a new cell wall forms between the two daughter cells
Mitosis - Wikipedia, the free encyclopedia
A new nuclear membrane, using the membrane vesicles of the parent cell's old nuclear membrane, forms around each set of separated daughter chromosomes (though the membrane does not enclose the centrosomes) The nucleoli reappear, too. A cell inherits a single centrosome at cell division, which is replicated by the cell with the help of the nucleus before a new mitosis begins, giving a pair of centrosomes
Each of these cultures can be subjected to a different drug, thus enabling doctors to find the right drug sooner, while it may still be of help, and without needlessly subjecting the person to many kinds of toxic chemicals. The nuclear envelope has totally disintegrated and the polar fibers have reached the centromeres of the chromosomes and have begun interacting with them
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