c? Cell division occurs once e. 4 haploid cells are the final result f Crossing
ID: 271452 • Letter: C
Question
c? Cell division occurs once e. 4 haploid cells are the final result f Crossing over occurs & Cell division occurs twice h. Replicated chromosomes line up in the middle of the cell i 2 diploid cells are the final result 4. Define crossing over. What phase does it occur? Are the resulting cells at Are the resulting cells at How does the number of chromosomes in a sex cell compare with the number of chromosomes in the parent cell? Does the parent cell in Mitosis start off as diploid or haploid? the end of Mitosis diploid or haploid? 5. Does the parent cell in Meiosis start off as diploid or haploid? the end of Meiosis diploid or haploid? 6. 7. 8. Describe the differences in how the chromosomes line up in middle of the cell during Metaphase 1 of Meiosis and Metaphase of Mitosis.Explanation / Answer
C. Cell division occurs once in the mitotic cell division to give two douther cells with same number of chormosomes as the mother cells.
D. Homologus Chromosomes pair along their length during the zygotene substage of prophase of meosis division. this process of pairing is called Synapsis.
E. 4 haploid cells are the final results of the Meotic cell division.
F. Crossing over occurs between the Non-sister chromatids of the homologus chromosomes during the pachytene subphase of Prophse of Meosis division.
G. Cell division occurs twice in Meosis with results of 4 haploid daugther cells.
H. Replicated chromosomes line in the middle of the cells in metaphase of the Mitosis and Meosis division.
I. 2 diploid cells are the final results of the mitotic cell division.
4. the exchange of chromatid segments between the non-sister chromatids of a homologous pair is called as crossing over. crossing over occur in the tetrad stage in which each chromosome in the homologous pair contain two sister chromatids and therefore the homologous pair will be made of four chromatids.
The crossing over occur during the Pachytene substage of Prophase-I of meosis-I and the terminalization occurduring the Diakinesis of Prophase-I of Meosis-I.
5. The parent cells in the Mitosis starts witht the Diploid cells and at the end the Mitotic division two diploid daugther cells will produce with same number of chromosomes as parent cells.
6. the parent cells in the Meosis starts with the Diploid cells and at the end the Meosis division 4 haploid daugther cells will produce with half number of chromosomes as compare to parent cell.
7. in humans, parent cell have 46 chromosomes (diploid) undergo Meosis division to form Sex cells with 23 chromosomes(haploid). this will occur in the reproductive cellw. thsi is occur in the reproductive or germ cells.
8. The chromosomes line up in middle of the cell in the metaphase of the Mitotic division are unpaired chromosomes whereas in the Metaphase I of the Meosis are paired chromosomes.
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