QUESTION 22 Before a cell divides, its DNA must be replicated to replace genetic instructions used by the original cell. provide a backup copy of DNA in case the original DNA is damaged during mitosis. supply each new cell with a full set of the genetic material. use as an energy source during cytokinesis. QUESTION 23 During mitosis, chromatids separate into daughter chromosomes in telophase. prophase. metaphase. anaphase. interphase.
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2. Which is true about the daughter cells following mitosis and cytokinesis? a) They are genetically different from each other and the parent cell b) They are genetically identical to each other and the parent cell c) They are genetically identical to each other, but different from the parent cell d) Only one of the two daughter cells is identical to the parent cell 3. At what phase of the cell cycle is DNA replicated? a) metaphase b) prophase c) S phase d) G1 phase e) telophase
Bryan V.
11. Match the following cellular processes with the phases of meiosis (more than one can be used): a. Microtubules attach to kinetochores at the centromere of each chromosome. b. Microtubules from both poles of the spindle move chromosomes to the center of the cell. c. Chromosomes condense to thickened structures that are visible under the microscope. d. The centromere splits and the sister chromatids separate. e. The nuclear envelope re-forms around the segregated chromosomes. f. Two new chromosomes form from each original chromatid. g. The nuclear envelope disappears. h. Microtubules pull chromosomes toward opposite poles. i. The spindle assembles from tubulin dimers. j. Chromosomes arrive at opposite poles of the cell. k. Chromosomes decondense. l. The meiotic spindle disappears. m. Crossing over takes place. n. Synapsis occurs. a. _________Prophase I b. _________Prometaphase I c. _________Metaphase I d. _________Anaphase I e. _________Telophase I f. _________Prometaphase II g. _________Prophase II h. _________Metaphase II i. _________Anaphase II j. _________Telophase II
Md.Daniyal A.
If a normal body cell of a plant contains 5 picograms of DNA, then that cell at the end of prophase of mitosis contains: Group of answer choices a. 10 picograms. b. 2.5 picograms. c. 5 picograms. d. 20 picograms. e. 15 picograms. 2. When chromosomes are arranged in the synaptonemal complex, leptotene occurs and pieces of DNA are exchanged between homologous chromosomes. Group of answer choices True False. 3. Which of the following is correct? Group of answer choices a. The Cell Cycle typically includes interphase, mitosis, and cytokinesis. b. Mitosis is the same as cell division. c. Cytokinesis is the division of duplicated chromosomes. d. All cells must go through interphase after telophase. e. Chromosomes are always duplicated during prophase.
John N.
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