Unit II PRACTICE Exam-A

Unit II PRACTICE Exam-A - UNIT II PRACTICE EXAM-A BSC 2011...

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UNIT II PRACTICE EXAM-A BSC 2011 SPRING 2008 Please select the choice of the best answer to the following questions and mark the letter of that choice on your scantron sheet. 1. A cell that passes the G 1 checkpoint will most likely ____. A. undergo chromosome duplication B. have just completed cytokinesis C. continue to divide only if it is a cancer cell D. show a drop in MPF concentration E. move into the G 0 phase. 2. A cell in which of the following phases would have the least amount of DNA? A. G 0 B. G 2 C. prophase D. metaphase E. anaphase 3. In an animal cell, the centrosome functions in the formation of _____. A. the cell plate B. kinetochores C. duplicate chromosomes D. centromeres E. microtubules of the spindle apparatus 4. SKIP 5. For mitosis, sister chromatids begin to separate and chromosomes move apart during ______. A. interphase B. telophase C. cytokinesis D. anaphase E. metaphase 6. The mitotic spindle begins to form during _____. A. interphase B. telophase C. prophase D. anaphase E. metaphase 7. Which phase of meiosis is most directly related to the law of independent assortment? A. prophase I B. prophase II C. metaphase I D. metaphase II E. anaphase II 8. For a particular organism, if n = 28, then ____ chromosomes will be present in a somatic cell and ____ chromosomes will be present in a gamete. A. 28, 14 B. 14, 28 C. 28, 56 D. 56, 28 E. 7, 14 9. For a particular organism, if 2n = 64, then ___ chromatids will be found in a somatic cell during metaphase of mitosis. A. 18 B. 32 C. 64 D. 128 E. 256 10. For a particular organism, if 2n = 64, then ____ chromatids will be found in a cell during metaphase II of meiosis. A. 18 B. 32 C. 64 D. 128 E. 256
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11. In diploid organisms, gametes are formed by the process of ______. A. crossing over B. fertilization C. binary fission D. mitosis E. meiosis 12. A karyotype is _____. A. an individual’s genotype B. an individual’s phenotype C. a unique combination of alleles found in a gamete D. a display of an organism’s chromosomes E. a blood type determination for an individual 13. Which of the following best describes the human SRY gene? A. It is a gene on the X chromosome that codes for a protein that initiates inactivation of an X chromosome. B. It is a gene on the X chromosome that codes for a protein that initiates inactivation of a Y chromosome. C. It is a gene on the X chromosome that codes for a protein needed for the development of embryonic ovaries. D. It is a gene on the Y chromosome that codes for a protein needed for the development of embryonic testes. E. It is a gene on the Y chromosome that codes for a protein that initiates inactivation of an X chromosome. 14. A Barr body would be expected to be found in which of the following? A. an egg cell
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This note was uploaded on 04/01/2012 for the course BSC BSC2011 taught by Professor Spears during the Spring '10 term at FSU.

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Unit II PRACTICE Exam-A - UNIT II PRACTICE EXAM-A BSC 2011...

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