practice mt4

practice mt4 - Test example: 1. If there are 20 centromeres...

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Test example: 1. If there are 20 centromeres in a cell at prophase I of meiosis, how many chromosomes are there in each daughter cell following at the end of meiosis II ? A. 10 B. 20 C. 30 D. 40 E. 80 2. In the figure below, G1 of the first cell cycle is represented by which number? A. I B. II C. III D. IV E. V 3. Homologous chromosomes synapse and crossing over occurs. A. In mitosis B. In meiosis I C. In meiosis II D. answers b and c E. answers a, b and c
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Use the figure below to answer question 4 4. Which drawing represents anaphase I of meiosis? A. I B. II C. IV D. V E. VI 5. Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosome? a. a male gamete b. a female gamete c. a male somatic cell d. a female somatic cell e. both b and d 6. Choose the best answer concerning nuclear divisions. a. microtubules are only used in mitosis and not in meiosis b. meiosis is used for growth and development of the organism c. meiosis results in unique daughter cells d. mitosis results in a reduction division in terms of genetic material e. all of the above 7. Which of the following statements about genes is incorrect ? a. Genetic differences can result from changes in the DNA called mutations. b. Genes correspond to segments of DNA. c. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. d. Many genes contain the information needed for cells to synthesize enzymes and other proteins. e. Under normal circumstances, each chromosome contains precisely one gene.
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8. In animals, meiosis results in gametes, and fertilization results in A) gametophytes. B) sporophytes. C) spores. D) clones. E) zygotes. 9. How do the two members of a pair of homologous chromosomes differ from each other? A) their length B) the precise sequence of the DNA within each of the chromosomes C) their staining patterns D) the position of the centromere within each of the chromosomes E) the identity and relative position of the genes present on each of the chromosomes 10. At which stage of mitosis are chromosomes photographed in the preparation of a karyotype? A) metaphase
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practice mt4 - Test example: 1. If there are 20 centromeres...

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