Which of the following facilitate chromosome separation during anaphase of mitosis? All of these facilitate chromosome separation. kinesin 13-directed kinetochore microtubule depolymerization kinetochore microtubule shrinkage at the plus end dynein-dynaction motor protein- directed forces ◄ Previous Next >

Which of the following facilitate chromosome separation during anaphase of mitosis? All of these facilitate chromosome separation. kinesin 13-directed kinetochore microtubule depolymerization kinetochore microtubule shrinkage at the plus end dynein-dynaction motor protein- directed forces ◄ Previous Next >

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter10: Cell Reproduction

Section: Chapter Questions

Problem 1VCQ: Figure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line...

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illustrate and briefly describe the alignment, pairing, and disjunction ofsister chromatids during mitosis. Include the molecular complexes cohesin and shugoshin and the enzyme separase.
Centrioles at opposite end of cell Spindle fibres attached to centromeres 46 double stranded chromosomes lined up along the metaphase plate Diploid cell 2n = ANAPHASE Centrioles at opposite poles Spindle fibres attaches to centromeres of the single stranded chromosomes 46 chromosomes get separated - 46 chromatids get pulled to each pole by spindle fibres Diploid cell 2n =
Imagine that a cell contains a temperature-sensitive mutation such that nuclear lamins cannot be phosphorylated at the restrictive temperature. Describe the phenotype of the mutant cells during mitosis at the restrictive temperature. O The mutant cells will not be able to decondense chromosomes and will be arrested in prophase O The mutant cells will not be able to assemble the mitotic spindle and will be arrested in metaphase O The mutant cells will not be able to disassemble the nuclear envelope and will be arrested in prophase The mutant cells will go through multiple mitotic cycles without cytokinesis and will become multi-nucleated The mutant cells will be unable to reassemble the nuclear envelope and will be arrested in telophase
28. 28. Which of the following would be expressed at approximately equal levels throughout the cell cycle? Kinetochore proteins Cyclins Cohesins Cyclin-dependent kinases
During anaphase of Mitosis, how do the chromosomes travel to the opposite ends of a dividing cell? O the centrosomes are constantly digesting spindle fibers making it shorter pulling the chromosomes nearer to the opposite ends of the cell the chromosomes are constantly traveling down the spindle fibers by digesting the fibers at the kinetochore O the chromosomes are twisting the spindle fibers making it shorter so that they may travel closer to the centrosome the centrosomes "reel" in the chromosomes using the attached spindle fibers
Protein complex present at centromeres in mitotic cells structure formed when DNA wraps around an octameric histone core Protein complex that is degraded at anaphase to allow sister chromatids to separate at mitosis microtubule based structure used to segregate chromosomes in mitosis and meiosis 1. cohesin complex 2. kinetochore 3. monopolin 4. nucleosome 5. synaptonemal complex 6. telomere 7. sister chromatid 8. spindle
A mitotic spindle is a structure formed in [Select] [Select] types of microtubules. [Select] while [Select] located at opposite ends of the cell. Within each of these are 3 cells that consists of a mitosis. Finally, without [Select] connection between the two spindle poles. microtubules help position each spindle, microtubules help to pull sister chromatids apart during microtubules, there would be no
In the absence of Separase, how would this affect the chromosomes dynamic during mitosis? Explain in detail. *
Indicate the stage of mitosis (interphase = I, prophase = P, metaphase = M, anaphase = A, telophase = T) during which each of the following events occur. chromatid doublets separate to individual chromosomescentriole replicatesreplicated chromosomes (chromatid doublets) are arranged in single file next to one another at the cell's equatornuclear membrane is disappearingspindle fibers form and become visiblecell plate (plant) or cleavage furrow (animal) forms and is visiblechromosomes are at opposite poles of the cell; cytokinesis is almost completedchromosomes (chromatids) first become visible as long thin strandsDNA (chromosome) replication occurs
In Coleus , the somatic cells are diploid with 24 chromosomes. How many of each of the following is present in each cell at the stage of mitosis and meiosis indicated below? kinetochore at prophase chromosomes at anaphase chromatids at metaphase 1 chromosomes at telophase after cytokinesis centromeres at anaphase chromosomes at telophase II after cytokinesis centromere at anaphase I chromatids at metaphase
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.
This is a picture of anaphase: Explain why you know this cell is in anaphase using 2 vocabulary words from this list (definitions are in question 1): Nuclear envelope/nucleus Chromatin chromatid/sister chromatid Chromosome Spindle tv Aa 23 MacBook Air DD FB F9 F7 F3 F4 F5 F2 @ 23 $ % & 3 4 5 7 8 9 P W R Y S D F G H J K L XIG YIB N M E