the ......duplicates during interphase to prepare the cell for mitosis. fill in the blanks. tell me now pls?
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DNA duplicates during inter phase of cell division to prepare the cell for mitosis
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the daughter cell will not have the correct amount of chromosomes if S phase does not occur. \n\nthe daughter cell will not have the same amount of chromosomes as parent cell for mitosis, \n\nand daughter cell will not have half the number of chromosomes as parent cell for meiosis.
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Stages of Interphase\n\n    * G1 phase: The period prior to the synthesis of DNA. In this phase, the cell increases in mass in preparation for cell division. Note that the G in G1 represents gap and the 1 represents first, so the G1 phase is the first gap phase.\n\n    * S phase: The period during which DNA is synthesized. In most cells, there is a narrow window of time during which DNA is synthesized. Note that the S represents synthesis.\n\n    * G2 phase: The period after DNA synthesis has occurred but prior to the start of prophase. The cell synthesizes proteins and continues to increase in size. Note that the G in G2 represents gap and the 2 represents second, so the G2 phase is the second gap phase.\n\n    * In the latter part of interphase, the cell still has nucleoli present.\n\n    * The nucleus is bounded by a nuclear envelope and the cell's chromosomes have duplicated but are in the form of chromatin.\n\n    * In animal cells, two pair of centrioles formed from the replication of one pair are located outside of the nucleus.
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It is definitely the chromosomes that divide in both mitosis and meiosis. However, the whole cells divides so # 1 sounds like the right answer. Did you ask in class? I am glad you are asking here , but you really should ask your teacher.
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(for animal cells..)\n1. non-kinetochore microtubules lengthen. this elongates the cell even more than before.\n2. pairs of sister chromosomes attach at opposite ends of the cell.\n3. new nuclear envelopes form around the two sets of dna at the opposite ends of the cell.\n4. cytokinesis (division of cytoplasm) occurs and the plasma membrane re-forms around the two daughter cells.
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1- Meiosis happens in stem cells that give rise to gametes (sex cells). \nMitosis happens in all other cells.\nIn women every month only one stem cell goes through meiosis forming 4 haploid cells. In men many cells go through meiosis everyday.\nEvery other cell in body goes through mitosis in a daily basis to replace old and dead cell.\n2- Before cell replication starts.\n3- At the end of the prophase (in case of meiosis, end of the prophase 1)\n4- Mitosis: diploid cells; Meiosis: haploid cells\n5- Every thing but cell division: the cell obtain nutrients and when it gets close to cell division, it will duplicate its DNA and other organelles.
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1.synapsis occur only in meiosis. \n2.mitosis divide once, where meiosis divide twice. \n3.mitosis produce two daughter cells that are genetically identical to the parent cell, where meiosis produce four daughter cells that have only half of the chromosomes the mater cell had. \n4.meiosis have their homologous chromosomes separate!! but mitosis don't.
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G1 - chromatin\nS - chromosomes\nG2 - chromatin\nMitosis - chromosomes (the chromosomes become less condensed in telophase though)\nCytokinesis - chromatin\n\nDuring all three subphases, the cell grows by producing protiens and cytoplasmic organelles such as mitochondria and endoplasmic reticulum.  However, chromosomes are duplicated only during the S phase.  Thus, a cell grows (G1), continues to grow as it copies its chromosomes (S), grows more as it completes preparations for cell division (G2), and divides (M).  I'm guessing cell growth is fastest in G1 but im not sure, so dont quote me.\nHope I helped =)
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Definitely b...\nDuring Interphase, there are 3 subphases - G1, S, and G2.  G1 is for growth of the cell, S is for synthesis of an extra set of chromosomes (amount of DNA in cells), and G2 is for preparation for the rest of cell division.  After interphase is prophase (nuclear membrane dissolves and DNA bundles up), then metaphase (DNA lines up on the center of the cell), anaphase (DNA separates towards poles), and telophase (Cell divides into two cells).  I hope this helps!\n\nAnswer: b. between the G1 and G2 phases of the cell cycle
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This happens regularly in the natural world. It's a common cause of what is referred to as polyploidy.\n\n"Polyploidy has occurred often in the evolution of plants.\nThe process can begin if diploid (2n) gametes are formed. These can arise in at least two ways.\n\n    * The gametes may be formed by mitosis instead of meiosis.\n    * Plants, in contrast to animals, form germ cells (sperm and eggs) from somatic tissues. If the chromosome content of a precursor somatic cell has accidentally doubled (e.g., as a result of passing through S phase of the cell cycle without following up with mitosis and cytokinesis), then gametes containing 2n chromosomes are formed."\n\n\nIf you are looking for someone to do your homework for you, as I suspect, then think again. I will suggest that you think about what will happen if this continues every genertion. That's the answer your teacher wants.
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They are pulled apart by the mitotic spindle fibers. This happens in anaphase of mitosis. :-)
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Telophase (sometimes spelled telephase) is a stage in either meiosis or mitosis in a eukaryotic cell reversing the effects of prophase and prometaphase events. During those events, the nucleus was dissolved and the chromatin in the cell was condensed into chromosomes. Telophase thus "cleans up" the secondary after effects of mitosis.\n\nMitosis is the process by which a cell separates its duplicated genome into two identical halves. It is generally followed immediately by cytokinesis which divides the cytoplasm and cell membrane. This results in two identical daughter cells with a roughly equal distribution of organelles and other cellular components. Mitosis and cytokinesis together is defined as the mitotic (M) phase of the cell cycle, the division of the mother cell into two daughter cells, each the genetic equivalent of the parent cell.\n\nMitosis occurs exclusively in eukaryotic cells. In multicellular organisms, the somatic cells undergo mitosis, while germ cells — cells destined to become sperm in males or ova in females — divide by a related process called meiosis. Prokaryotic cells, which lack a nucleus, divide by a process called binary fission.\n\n1.The S phase, short for synthesis phase, is a period in the cell cycle during interphase, between G1 phase and the G2 phase. Following G1, the cell enters the S stage, when DNA synthesis or replication occurs. At the beginning of the S stage, each chromosome is composed of one DNA double helix molecule, which is called a chromatid. At the end of this stage, each chromosome has two identical DNA double helix molecules, and therefore is composed of two sister chromatids. During S phase, the centrosome is also duplicated. These two events are unconnected, but require many of the same factors to progress. The end result is the existence of duplicated genetic material in the cell, which will eventually be divided into two.\n\nDamage to DNA often takes place during this phase, and DNA repair is initiated following the completion of replication. Incompletion of DNA repair may flag cell cycle checkpoints, which halts the cell cycle.
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Phases of mitosis\n \nThe cell cycle.The mitotic phase is a relatively short action-packed period of the cell cycle. It alternates with the much longer interphase, where the cell prepares itself for division. Interphase is divided into three phases, G1 (first gap), S (synthesis), and G2 (second gap). During all three phases, the cell grows by producing proteins and cytoplasmic organelles. However, chromosomes are replicated only during the S phase. Thus, a cell grows (G1), continues to grow as it duplicates its chromosomes (S), grows more and prepares for mitosis (G2), and divides (M).\n\nMitosis is a continual and dynamic process. For purposes of description, however, mitosis is conventionally broken down into five subphases: prophase, prometaphase, metaphase, anaphase, and telophase.\n\n[edit]\nProphase\n \nProphase: The two round objects above the nucleus are the centrosomes. Note the condensed chromatin.Main article: Prophase \nNormally, the genetic material in the nucleus is in a loosely bundled coil called chromatin. At the onset of prophase, chromatin condenses together into a highly ordered structure called a chromosome. Since the genetic material has already been duplicated earlier in S phase, the chromosomes have two sister chromatids, bound together at the centromere by the protein cohesin. Chromosomes are visible at high magnification through a light microscope.\n\nJust outside the nucleus are two centrosomes. Each centrosome, which was replicated earlier independent of mitosis, acts as a coordinating center for the cell's microtubules. The two centrosomes sprout microtubules (which may be thought of as cellular ropes or poles) by polymerizing free-floating tubulin protein. By repulsive interaction of these microtubules with each other, the centrosomes push themselves to opposite ends of the cell (although new research has shown that there might be a mechanism inside the centromeres that also grab the microtubules and pull the chromatids apart). The network of microtubules is the beginning of the mitotic spindle.\n\nSome centrosomes contain a pair of centrioles that may help organize microtubule assembly, but they are not essential to formation of the mitotic spindle. Plant cells that lack centrioles have no trouble undergoing mitosis.\n\n[edit]\nPrometaphase\n \nPrometaphase: The nuclear membrane has degraded, and microtubules have invaded the nuclear space. These microtubules can attach to kinetochores or they can interact with opposing microtubules.Main article: Prometaphase \nThe nuclear envelope dissolves and microtubules invade the nuclear space. This is called open mitosis, and it occurs in most multicellular organisms. Some protists, such as algae, undergo a variation called closed mitosis where the microtubules are able to penetrate an intact nuclear envelope.\n\nEach chromosome forms two kinetochores at the centromere, one attached at each chromatid. A kinetochore is a complex protein structure that is analogous to a ring for the microtubule hook; it is the point where microtubules attach themselves to the chromosome. Although the kinetochore is not fully understood, it is known that it contains a molecular motor. When a microtubule connects with the kinetochore, the motor activates, using energy from ATP to "crawl" up the tube toward the originating centrosome. The kinetochore provides the pulling force necessary to later separate the chromosome's two chromatids.\n\nWhen the spindle grows to sufficient length, kinetochore microtubules begin searching for kinetochores to attach to. A number of nonkinetochore microtubules find and interact with corresponding nonkinetochore microtubules from the opposite centrosome to form the mitotic spindle.CXV\n\nPrometaphase is sometimes considered part of prophase.\n\n[edit]\nMetaphase\n \nMetaphase: The chromosomes have aligned at the metaphase plate.Main article: Metaphase \nAs microtubules find and attach to kinetochores in prometaphase, the centro
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Interphase: DNA replication\nProphase: Chromosomes become visible, nuclear membrane and nucleoli disappear, spindle forms between centrosomes\nMetaphase: Chromosomes align at cell equator and spindle fibers attach to kinetochores\nAnaphase: chromatids pulled apart to opposite poles of the cell once centromeres divide\nTelophase: chromatids (chromosomes) reach opposite poles and opposite of prophase occurs\nCytokinesis: the rest of the cell divides
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that mitosis or meiosis occured.
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none\n\n\nyou start with one pair of homologous chromosomes in prophase I of meiosis I.  at metaphase I, these homologues line up across the metaphase plate, and at anaphase, they seperate so that one homologue goes to one pole, and the other homologue goes to the other pole.  after cytokinesis at the end of telophase I, you have one homologue in each cell...that homologue then goes through meiosis II, and at metaphase II, that homologue lines up at the metaphase plate with each sister chromatid facing each pole, and the chromosome is "pulled apart".  Anaphase II pulls the sister chromatids to each pole, and cytokinesis splits the one cell into two....two cells, each containing one sister chromatid of a homologous pair. (although in some text books this is refered to as a single homologue)
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During s-phase of interphase, the genetic material is duplicated.    So #1 is FALSE.\n\nTelophase sees the production of the nulear membrane.  So in effect, new nuclei are formed, making #2 TRUE.\n\nMitosis creates two daughter cells that are diploid, because it is reproduction of somatic (body cells), no production of gametes (which would be haploid).  So, #3 is TRUE\n\nChromosome find their homolougous pair during prophase of Meiosis, NOT mitosis.  Pairing occurs during meiosis so the the gametes that are haploid can be formed. So #4 is TRUE\n\nEach species has a specific number of chromosomes- fruit flies for example have 8 chromosomes, while humans have 46.  So #5 is TRUE.