7) Which of the following occurs during interphase? A) a reductioit in the size
ID: 268810 • Letter: 7
Question
7) Which of the following occurs during interphase? A) a reductioit in the size of the nuclear membrane b) duplicátion of the chromosomes C) cytokinesis D) cell growth and duplication of the chromosomes E) separation of newly formed DNA to opposite ends of the cell 8) The genetic material is duplicated during A) the mitotic phase B) G1 Q the S phase D) G2- E) mitosis 9) The phase of mitosis during which the nuclear envelope fragments and the nucleoli disappear is called A) interphase B) prophase. C) metaphase. D) anaphase E) telophase. 10) Which of the following is a feature of plant cell division that distinguishes it from animal cell division? A) formation of a cell plate B) formation of a cleavage furrow C) lack of cytokinesis D) production of four (rather than two) new cells per mitotic division E) disappearance and subsequent reappearance of the nucleolus 11) A benign tumor differs from a malignant tumor in that a benign tumor A) is cancerous. B) spreads from the original site. C) does not metastasize. D) never causes health problems. E) can only arise in the brain, whereas a malignant tumor can arise anywhere in the body 12) Which of the following statements regarding the differences between mitosis and meiosis is false? A) In meiosis four daughter cells are produced, whereas in mitosis two daughter cells are produced. B) Cells produced by mitosis are diploid, whereas cells produced by meiosis are haploid. C) In mitosis cytokinesis occurs once, whereas in meiosis cytokinesis occurs twice. D) Crossing over is a phenomenon that creates genetic diversity during mitosis. E) Mitosis, but not meiosis, occurs in somatic cells 13) Which of the following statements regarding genetic diversity is false? A) Genetic diversity is enhanced by random fertilization. B) Genetic diversity is enhanced by independent orientation of chromosomes at metaphase L C) Genetic diversity is enhanced by mitosis of somatic cells D) Genetic diversity is enhanced by crossing over during prophase I of meiosis. E) Genetic diversity is enhanced by random mutations of the DNA.Explanation / Answer
Answer:-
7. The correct option is D. Cell growth and duplication of chromosomes. Interface refers to all the stages other than Mitosis.
8. The correct option is C. The S phase. S phase also known as synthesis phase is when DNA replication occurs.
9. The correct option is B. Prophase. During prophase, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down.
10. The correct option is A. Formation of a cell plate
11. The correct option is C. Does not metastasize. A benign tumor always remains on the primary site of tumor.
12. The correct option is D. Crossing over is a phenomenon that creates genetic diversity during mitosis. This statement is false among the given options.
13. The correct option is C. Genetic diversity is enhanced by mitosis of somatic cells. This statement is false as mitosis of somatic cells doesn't play a vital role in creating genetic diversity.
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