How does mitosis result in daughter cells containing identical number and same DNA with its parent cell? Crossing over occurs during prophase I Crossing over does not occur during metaphase Crossing over does not occur during prophase Crossing over occurs during the g1 phase
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- Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.S. Chromosomes are duplicated during what stage of the cell cycle? G1 phase S phase prophase prometaphaseHow does mitosis result in daughter cells containing identical number and same DNA with its parent cell? O Crossing over occurs during the g1 phase O Crossing over occurs during prophase I Crossing over does not occur during prophase Crossing over does not occur during metaphase
- In Coleus , the somatic cells are diploid with 24 chromosomes. How many of each of the following is present in each cell at the stage of mitosis and meiosis indicated below? kinetochore at prophase chromosomes at anaphase chromatids at metaphase 1 chromosomes at telophase after cytokinesis centromeres at anaphase chromosomes at telophase II after cytokinesis centromere at anaphase I chromatids at metaphaseCentrioles at opposite end of cell Spindle fibres attached to centromeres 46 double stranded chromosomes lined up along the metaphase plate Diploid cell 2n = ANAPHASE Centrioles at opposite poles Spindle fibres attaches to centromeres of the single stranded chromosomes 46 chromosomes get separated - 46 chromatids get pulled to each pole by spindle fibres Diploid cell 2n =Which of the following sentences is CORRECT: O Nuclear envelopes re-form in anaphase II Nondisjunction can occur in the meiosis I or meiosis II, or during mitosis During metaphase I the chromosomes move to the opposite poles of the cells is the site of phospholipids, lipids, and steroid synthesis O golgi appratus rough endoplasmic reticulum smooth endoplasmic reticulum
- During meiosis, homologous sets of four chromatids are lined up along the cell's equator, attached to spindle fibers. Which of the following processes will happen next? Top of Form Anaphase I Telophase II Prophase I Metaphase IIWhich of the following statements are true regarding mitosis in humans? 23 pairs of homologous chromosomes are separated four haploid gametes are produced in males 46 pairs of homologous chromosomes are separated two genetically identical daughter cells are produced 23 pairs of sister chromatids are separated 46pairs of sister chromatids are separated 1 haploid gamete and 2 polar bodies are produced in femalesWhich of the following features or events occur during prophase/prometaphase of mitosis AND prophase I of meiosis AND prophase II of meiosis? Mark all that apply. Chromatin condensation Crossing-over occurs Homologous chromosomes alignment Spindle assembly Synaptonemal complex formation
- During anaphase of Mitosis, how do the chromosomes travel to the opposite ends of a dividing cell? O the centrosomes are constantly digesting spindle fibers making it shorter pulling the chromosomes nearer to the opposite ends of the cell the chromosomes are constantly traveling down the spindle fibers by digesting the fibers at the kinetochore O the chromosomes are twisting the spindle fibers making it shorter so that they may travel closer to the centrosome the centrosomes "reel" in the chromosomes using the attached spindle fibersМЕТАРНASЕ Centrioles at opposite end of cell Spindle fibres attached to centromeres 46 double stranded chromosomes lined up along the metaphase plate Diploid cell 2n = ΑΝΑΡΗΑASE Centrioles at opposite poles Spindle fibres attaches to centromeres of the single stranded chromosomes 46 chromosomes get separated - 46 chromatids get pulled to each pole by spindle fibres Diploid cell 2n =Mitosis Meiosis Definition Prophase Metaphase Anaphase Telophase Prophase I Metaphase I Anaphase I Telophase I Prophase II Metaphase II Anaphase II Telophase II Steps of each phase Number of cell divisions Number of cells produced *How many chromosomes per 46 daughter cell? * Mitosis starts with 46 chromosomes in each parent cell, and then ends with 46 chromosomes in each daughter cell. Cells divide onl once in Mitosis, but they divide twice during Meiosis, so we should end with half as many chromosomes in Meiosis vs Mitosis.