A cell undergoes several different steps as it divides into two identical daughter cells. This cell is undergoing cell division. In the step immediately following the phase that is shown, one daughter cell is missing a chromosome, and the other daughter cell has an extra chromosome. What happened in the step immediately before the phase pictured here to cause this problem? O A spindle fiber captured a chromosome on one side of the centromere, but a spindle fiber from the other centriole failed to capture it on the opposite side. O The cell plate formed prematurely and blocked chromosome movement, resulting in both chromosomes being trapped in just one daughter cell. O The cell moved prematurely from interphase to a non-dividing phase, and any unseparated chromosomes were prevented from dividing. O The centrosomes (and thus the aster) failed to form, preventing the cell from separating and redistributing chromosomes correctly into daughter cells.

A cell undergoes several different steps as it divides into two identical daughter cells. This cell is undergoing cell division. In the step immediately following the phase that is shown, one daughter cell is missing a chromosome, and the other daughter cell has an extra chromosome. What happened in the step immediately before the phase pictured here to cause this problem? O A spindle fiber captured a chromosome on one side of the centromere, but a spindle fiber from the other centriole failed to capture it on the opposite side. O The cell plate formed prematurely and blocked chromosome movement, resulting in both chromosomes being trapped in just one daughter cell. O The cell moved prematurely from interphase to a non-dividing phase, and any unseparated chromosomes were prevented from dividing. O The centrosomes (and thus the aster) failed to form, preventing the cell from separating and redistributing chromosomes correctly into daughter cells.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 1ITD: Biologists have long been interested in the effects of radiation on cells. In one experiment,...

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The complex of proteins that holds two chromatids together is called the... Group of answer choices A. centromere B. spindle microtubule C. kinetochore D. centrosome E. centriole
If a cell that had two copies of each chromosome, but problems with the spindle caused the sister chromatids to remain attached to each other and to only one spindle pole, what cells would result? a) cells with 2 copies of each chromosome and 2 copies of each chromosome b) cells with 3 copies of each chromosome and 1 copy of each chromosome c) cells with 6 copies of each chromosome and 2 copies of each chromosome d) cells with 4 copies of each chromosome and 0 copies of each chromosome e) cells with 1 copy of each chromosome and 1 copy of each chromosome
A somatic cell has 46 chromosomes aligned at metaphase. How many chromosomes are present at anaphase, immediately after the centromeres have split?
In meiosis, each centromere has a spindle fiber attached only to one side. In mitosis, each centromere has a spindle attached to how many sides?
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In the tracking chromosomal DNA movement through mitosis experiment, how many chromosomes did each of your daughter cells contain? Why is it important for each daughter cell to contain information identical to the parent cell? How often do human skin cells divide? Why might that be? Compare this rate to how frequently human neurons divide. What do you notice?
Which of the following statements is TRUE? Group of answer choices a Interphase chromosomes are loosely compacted and do not associate with histones until the cell is preparing to divide. b Interphase chromosomes are loosely compacted, overlapping, and intertwined with each other within the nucleus. c None of these are TRUE d Radial loops in the condensing chromosome are formed due to interactions between 30 nm fibers and the scaffolding proteins of the nuclear matrix - producing the 300 nm fiber of the chromosome e Interphase chromosomes are also known as euchromatin. Condensed, metaphase chromosomes are also known as heterochromatin.
Draw and label G1 and G2 stages of interphase and each stage of mitosis (in order) for a cell that has two large and two small chromosomes, 2n=4. For unreplicated chromosome draw a line ( / ) and for replicated chromosome draw an X. Since we are focusing on the DNA, you can skip drawing the nuclear membrane or spindle fibers. For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. Mark and label a place on one of the large chromosomes with the dominant allele of the “A” gene and put the recessive allele “a” on the other homolog. Mark and label a place on one of the small chromosomes with allele “B” and put the recessive allele “b” on the other homolog.
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