Please label the following statements as True (A on scantron) or False (B on sca
ID: 256797 • Letter: P
Question
Please label the following statements as True (A on scantron) or False (B on scantron). Substantively correct each FALSE statement for an extra point. 12. Synapses and chiasmata are formed during mitosis. 13. Mitosis produces identical daughter cells that are NOT identical to the parent cell. 14. Chiasmata form between non-sister chromatids of homologous chromosomes. 15. 1 diploid parent cell becomes 2 haploid cells during Meiosis I. ) 16. Sexual reproduction is a mechanism for producing clones. 17. Homologous chromosomes are the same size and shape. ) 18. Trisomy 21 is the result of having only 1 copy of chromosome 21.) 19. In meiosis I, homologous chromosomes separate, while in mitosis, sister chromatids separate. ) 20. Transformed cells are defined as having their cell cycle under strict control. 21. After chiasmata resolve, all 4 chromatids are new recombinants. ) 22. Which statement is true? a. DNA replication precedes m-phase in mitosis but only the first round of replication in meiosis. b. DNA replication precedes every round of cell division in mitosis and meiosis C. DNA replication precedes mitosis but not meiosis. d. DNA replication occurs before the 2nd round of meiosis. e. all statements are trueExplanation / Answer
12) False, Synapses and Chiasmata, both form during meiosis, not mitosis. Synapses is the pairing of two homologous chromosomes during tetrad formation. It takes place in prophase 1 of meiosis. Chiasmata is the point at which crossing over takes place between chromosomes. It occurs during diplotene stage of prophase 1 during meiosis.
13) False, The sesult of Mitosis is 2 identical daughter cells which are similar to the parent cell undergoing cell division with the same number of chromosomes as present in the parent cell.
14) True, Chiasmata is a cross-shaped structure that forms the point of contact between non-sister chromatids of homologous chromosomesfirst seen in the tetrads of the diplotene stage of meiotic prophase.
15) False, Meiosis results in 4 haploid daughter cells from 1 diploid parent cell. 2 haploid cells are formed as a result of meiosis 1 and the other 2 cells are formed as a result of meiosis 2 by division of the haploid cells of meiosis 1.