During metaphase, what may happen if spindle fibers (kinetochore microtubules) will not be attached at the centromere via the kinetochore? o the cell will be arrested at G zero phase the DNA will be fully distributed to all daughter cells the number of DNA will be divided to two daughter cells One of the daughter cells may not contain any DNA at all

During metaphase, what may happen if spindle fibers (kinetochore microtubules) will not be attached at the centromere via the kinetochore? o the cell will be arrested at G zero phase the DNA will be fully distributed to all daughter cells the number of DNA will be divided to two daughter cells One of the daughter cells may not contain any DNA at all

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter18: Cell Reproduction

Section: Chapter Questions

Problem 6SQ: After mitosis, each daughter cell contains genetic instructions that are ______ and _____ chromosome...

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After mitosis, each daughter cell contains genetic instructions that are ______ and _____ chromosome number of the parent cell. a. identical to the parent cells; the same b. identical to the parent cells; one-half the c. rearranged; the same d. rearranged; one-half the
S. Chromosomes are duplicated during what stage of the cell cycle? G1 phase S phase prophase prometaphase
The mitotic spindles arise from which cell structure? centromere centroscme kinetochore cleavage furrow
Metaphase in mitosis is similar to what stage in meiosis? a. prophase I b. prophase II c. metaphase I d. metaphase II e. crossing-over
Describe the critical events of mitosis that are responsible for ensuring that each daughter cell receives a full set of chromosomes from the parent cell.
Figure 6.4 Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the initotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.
Which of these is paired incorrectly?a. prometaphase—the kinetochores become attached tospindle fibersb. anaphase—daughter chromosomes migrate toward spindlepolesc. prophase—the nucleolus disappears and the nuclearenvelope disintegratesd. metaphase—the chromosomes are aligned in the metaphaseplatee. telophase—a resting phase between cell division cycles
Which types of microtubules are essential for the major events occurring during anaphase B ? A. Inter-polar and astral.B. Kinetochore and astral.C. Astral only.D. Kinetochore and inter-polar.E. Kinetochore only.
which of the following events occurs during anaphase B in a mitotic cell a. lengthening of the overlap microtubules b. Shortening of the overlap microtubules c. Shortening of the overlap microtublues d. Shortening of the astral microtubules e. Lengthening of the kinetochore microtubules
A sexually reproducing organism has the following phenotype DdEeAaTt. The D and E loci are on the same arm of a metacentric chromosome in the cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. There are no other chromosomes. Show a diagram of the cell in metaphase of mitosis and the result of mitosis.
A cell in G1 of interphase has 12 chromosomes (2 n = 12). How many chromosomes and DNA molecules will be found per cell when this original cell progresses to After cytokinesis following meiosis II ?
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.