1 SEM ACC W/RAVEN CARDED
1 SEM ACC W/RAVEN CARDED
12th Edition
ISBN: 9781265486297
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 11, Problem 6U

At metaphase I the kinetochores of sister chromatids are

a. attached to microtubules from the same pole.

b. attached to microtubules from opposite poles.

c. held together with cohesin proteins.

d. not attached to any microtubules.

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Which of the following statements is FALSE?   A. Centrosomes are anchor points for microtubules and are essential to form the mitotic spindle.   B. In the eukaryotic cell cycle the cell spends much more time in the interphase than in the mitotic phase.   C. In telophase two nuclear envelopes are fully formed and the cell splits in two via cytokinesis.   D. The contraction of the kinetochore microtubules leads to the separation of the sister chromatids during anaphase.   E. In the prophase chromatin condenses into X-shaped chromosomes.
Which of the following occurs during metaphase II?   A. The chromosomes align midway between spindle poles.   B. The sister chromatids separate and move toward the spindle poles.   C. Spindle microtubules attach to each sister chromatid as the nuclear envelope breaks up.   D. A nuclear envelope forms around each set of chromosomes to form four haploid nuclei.
Which of the following occurs during metaphase I?   A. Homologous chromosomes pack tightly, pair up, and swap segments.   B. Homologous chromosome pairs are aligned midway between spindle poles.   C. The spindle separates the homologous chromosomes and moves them toward opposite spindle poles.   D. A complete set of chromosomes cluster at each cell end, and two haploid nuclei are produced.
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