practice test 4 - 60. Which structures are not part of the...

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60. Which structures are not part of the spindle? A) accessory tubulins B) aster microtubules C) kinetochore microtubules D) polar microtubules 61. Which process is not associated with telophase? A) "decondensing" chromosomes B) reforming nuclear envelopes C) reforming of nucleoli D) spindle formation 62. The words "equatorial plane" are associated with which phase of mitosis? A) prophase B) metaphase C) anaphase D) telophase 63. An organism that has 12 homologous pairs of chromosomes has a diploid number of . .. A) 2 B) 6 C) 12 D) 24 E) 48 64. In a sexually reproducing species that is haploid during most of its life cycle, meiosis. .. A) restores the diploid condition B) does not occur C) follows fertilization D) does not reduce the chromosome number 65. The n and 2n numbers, respectively, for an organism with two homologous pairs of chromosomes are. ..
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A) one and two B) two and one C) two and four D) four and two 66. Sexual reproduction involves two processes, the effects of which offset each other. The processes are. .. A) meiosis and fertilization B) meiosis and mitosis C) mitosis and cytokinesis D) cytokinesis and fertilization E) mitosis and fertilization 67. The S phase of interphase is characterized by. .. A) separation of chromatids B) replication of DNA C) the reformation of the nuclear envelope Answers: 60 =A; 61 = D; 62 = B; 63 = D; 64 = C; 65 = C; 66 = A; 67 = B 68. During which phase of meiosis are homologous pairs of chromosomes separated from one another? A) Anaphase I B) Anaphase II C) Prophase I D) Prophase II E) Telophase 69. "Crossing-over" occurs during which phase of meiosis?
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A) Anaphase I B) Anaphase II C) Prophase I D) Prophase II E) Telophase 70. The random arrangement at the metaphase plate of the members of a given homologous pair of chromosomes relative to other homologous pairs is known as. .. A) crossing-over B) independent assortment C) mutation D) random fertilization Answers: 68 = A; 69 = C; 70 = B 71. Alternate forms of a gene are referred to as. .. > A) alleles B) homologs C) phenons D) zygotenes 72. You are given the genotype AABbCcDdEEFfGg. How many different types of gametes can be formed if cells of this genotype underwent meiosis? A) 1
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practice test 4 - 60. Which structures are not part of the...

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