Biology

Biology, 23.07.2019 16:00, Amholloway13

What is the best description of chromosomes by the end of metaphase ii of meiosis

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Biology, 23.06.2019 17:00, epmooneyham922

Which statements describe differences between metaphase i and metaphase ii? check all that apply. chromosomes line up in the middle in metaphase i only. chromosomes condense in metaphase i only. a cell has half the number of chromosomes in metaphase ii. there are twice the number of cells in metaphase ii. spindle fibers exist in metaphase ii only.

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Biology, 30.06.2019 22:30, kayleebueno

Answers amoeba sisters: video recap meiosis1. interphase must occur before meiosis can happen. what would happen is interphase didn't occur first? 2. a cell that begins meiosis has 23 chromosomes inherited from the mother and 23 chromosomes inherited from the father. in the process of meiosis, chromosomes begin to match up in homologous pairs. how would you know if two chromosomes were homologous? 3. crossing-over is a very important event in prophase i of meiosis! what happens during crossing over and what is the significance? 4. meiosis does pmat twice! that means there is a prophase i and ii. there is a metaphase i and ii, etc. if the cartoon below has chromosomes in the middle of the cell, how should you know whether it was in metaphase i or ii? 5. meiosis does not always occur without any difficulties. describe what occurs during nondisjunction and the effect on the resulting cells.

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Biology, 15.07.2019 00:30, mrgutierrez1

Which of the following statements best describes the major difference between metaphase 1 of meiosis and metaphase of mitosis? (a) in metaphase 1 tetard srts of homologous chromosomes stay together as they line up along the center of the cell (b) in metaphase homologous chromosomes sre separated as each sister chromatid set os pulled to one end of the cell (c) im metaphase sister chromatids are separated and pulled apart to form a total of four new haploid cells. (d) in metaphase 1 sets of sister chromatids line up at the center of the cell and spindle fibers pull them apart.

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Biology, 02.08.2019 00:50, glizbethh00

Matching questions! will award match the following terms with the best definition: 1. prophase of meiosis i 2. s-phase of interphase 3. cytokinesis 4. meiosis 5. telophase of mitosis & meiosis 6. anaphase i of meiosis 7. mitosis 8. metaphase i of meiosis 9. anaphase ii of meiosis & anaphase of mitosis 10. metaphase of mitosis definitions: a. the separation of homologous chromosomes; the chromosomes are guided to opposite poles b. chromosomes line-up in the center of the cell across the metaphase plate c. chromosomes become clearly visible; nuclear region has 2 pairs of already duplicated chromosomes (tetrad) & crossing over (synapsis) occurs d. sister chromatids are separated and moved to opposite sides of the cell e. creates haploid daughter cells that contain 1 copy of the parental genetic material and contains 2 divisions of nuclear material f. replication or duplication of genetic material (dna) within the cell g. cytoplasm and needed organelles are divided between the newly formed nuclei h. alignment of homologous chromosomes (tetrads) down the center of the cell i. the daughter cells have the same number of chromosomes and the same amount of dna. j. at the end of this phase the cell plate or cleavage furrow begins to appear indicating that cytokinesis is starting

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