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mitosis and miosis
Terms in this set (32)
name 3 stages of cell interphase
1.G1( cell prepares for replication and grown.
2. S phase (DNA Synthesis where cell replicate)
3. G2 Cell prepares for Mitotic phase or M phase.
1 Chromosome condense
2 chromosomes are duplicated to make two sister chromatids
3.mitotic spindle begins to form
4. Nuclear membrane disappears
Chromosomes line up on metaphasal plate
1separation of centromeres
2 equal separations of chromosomes
2. chromosomes decondense
3.spindle broken down
4. Nuclear envelope reformed
In Mitosis Daughter Cells have what amount of chromosomes when compared to the parent cell?
the same amount
Rate of Cell division
1. cells divided at different rates
2.RBC's divide rapidly in bone marrow
3. Cancer cells divide constantly
Regulation of cell cycle
1. Cell to cell contact
2. once a cell is in contact with another cell it will not divide.
What is Meiosis
1involves 2 cell divisions
2 results 4 cells with 1/2 the normal genetic information.
Normal amount of genetic material
1/2 the genetic material
During which stage of meiosis do chromatids separate completely?
Which event occurs in meiosis but not
Crossing Over or Chiasmata or Tetrad
Meiosis results in
4 haploid daughter cells
Crossing over occurs during
A cell with a diploid number of 24 goes through meiosis. How many chromosomes are in each daughter cell?
The 4 homologous chromatids which come together in meiosis I is referred to as a(n)
During which stage of the meiotic cell cycle does DNA replication occur?
DNA Replications occurs during the "S" phase of interphase which proceeds meiosis I.
During which phase of meiosis does the nuclear envelope reform around the chromosomes?
The nuclear envelope reforms once meiosis is complete, in telophase II.
Homologous chromosomes move towards opposite poles of a cell during
Homologous chromosomes move toward opposite poles during Anaphase I. In Anaphase II sister chromosomes separate.
Metaphase of meiosis I and meiosis II differ in that
Homologous chromosomes line up in metaphase I and duplicated chromosomes (sister chromatids) line up on the equatorial plate during metaphase II.
production of sperm cells, the process by which male gametes form
process by which gametes are produced in female animals( mature eggs)
Dna DOES NOT double
2. Chromosomes randomly line up along metaphase platelike regular mitosis
3.during anaphase 2. CENTROMERES BREAK and each chromosome is pulled to opposite sides of the Cell
4. Nucli reform and cytokenesis usually occurs (although it is often unequal)
Put the phases of mitosis in the correct order
prophase, metaphase, anaphase, telophase
Mitosis is completed at which stage
the complex of DNA and protein that make up the chromosomes
Mitosis -During anaphase:
Mitosis-Which of the following events do NOT occur in prophase?
Chromosomes are replicated
The division of cytoplasm is called
Mitosis-The chromosomes are replicated during
Mitosis-Which of the following represents the correct order of the phases of the cell cycle using g1,m,s,g2,
G1 to S to G2 to M
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