D Question 12 Anaphase involves the: Re-forming the nuclear envelope de-compaction of chromosomes, and spindle disappears. O Aligning of the chromatids along the midline of the cell Ⓒ Compaction of chromosomes, positioning of the centrosomes, and spindle formation begins O Nuclear envelope breakdown and spindle completion Segregation of sister chromatids D Question 13 Prophase involves the: Nuclear envelope breakdown and spindle completion Aligning of the chromatids along the midline of the cell Re-forming the nuclear envelope, de-compaction of chromosomes, and spindle disappears O Segregation of sister chromatid Compaction of chromosomes, positioning of the centrosomes, and spindle formation begins

D Question 12 Anaphase involves the: Re-forming the nuclear envelope de-compaction of chromosomes, and spindle disappears. O Aligning of the chromatids along the midline of the cell Ⓒ Compaction of chromosomes, positioning of the centrosomes, and spindle formation begins O Nuclear envelope breakdown and spindle completion Segregation of sister chromatids D Question 13 Prophase involves the: Nuclear envelope breakdown and spindle completion Aligning of the chromatids along the midline of the cell Re-forming the nuclear envelope, de-compaction of chromosomes, and spindle disappears O Segregation of sister chromatid Compaction of chromosomes, positioning of the centrosomes, and spindle formation begins

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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The mitotic spindles arise from which cell structure? centromere centroscme kinetochore cleavage furrow
Figure 10.6 Which of the following is the correct order of events in mitosis? Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus reforms and the cell divides. Cohesin proteins break down and the sister chromatids separate. The kinetochore becomes attached to the mitotic spindle. Cohesin proteins break down and the sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the cohesin proteins. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus reforms and the cell divides. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. Cohesin proteins break down and the sister chromatids separate. The nucleus reforms and the cell divides.
If the M checkpoint is not cleared, what stage of mitosis will be blocked? prophase prometaphase metaphase anaphase
Matching Terms: A. Prophase B. Anaphase C. Telophase D. Metaphase E. Interphase _____1. The sister chromatids are moving apart. _____2. The nucleolus begins to fade from view. _____3. A new nuclear membrane is forming. _____4. The cell membrane begins to pinch in. _____5. The chromosomes de-condense. _____6. The chromosomes are located at the equator. _____7. The nuclear membrane begins to fade from view. _____8. The chromosomes move towards the poles of the cell. _____9. Sister chromatids line up along the equator. _____10. The division (cleavage) furrow appears _____11. The spindle is formed. _____12. Chromosomes are not visible. _____13. The cell plate begins to be built. _____14. Chromosomes replicated. _____15. The reverse of prophase.
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
1.What phase of mitosis is this? 2.What is the indicated structure 1? chromosome chromosome with two sister chromatids centrioles/centrosome spindle fibres metaphase plate 3.If the diploid (2n) number of this cell is 8 how many chromosomes are present Answer. 4.If the diploid (2n) number of this cell is 8 how many sister chromatids are present Answer. 5.If the diploid (2n) number of this cell is 8 how many homologous pairs are present Answer.
Answer the following Multiple choice. 1.If there are 80 chromatin threads during the interphase stage, how many chromosomes will be in metaphase II a. 40 b. 80 c. 160 d. 0 2.A diplod cell with 30 chromosomes undergoes meiotic cell division. How many centromeres is present in anaphase I? * a. 15 b. 30 c. 60 d. 0 3.A diplod cell with 30 chromosomes undergoes meiotic cell division. How many chromatids is present in each cell in anaphase II? * a. 15 b. 30 c. 60 d. 0 4. A diplod cell with 30 chromosomes undergoes meiotic cell division. How many chromatids is present in anaphase I? * a. 15 b. 30 c. 60 d. 0 5.In a test cross, a homozygous recessive parent (mm) and a heterozygous parent (Mm) are crossed. What is the phenotypic probability of the offspring? * a. 100% Mm b. 100% mm c. 50% Mm and 50% mm d. 75% Mm and 25% mm e. None of the choices
1) What phase of mitosis is this? Answer: 2) What is the indicated structure 1? select one. a. chromosome b. chromosome with two sister chromatids c. centrioles/centrosome d. spindle fibres e. metaphase plate 3)If the diploid (2n) number of this cell is 8 how many chromosomes are present? 4) If the diploid (2n) number of this cell is 8 how many sister chromatids are present? 5) If the diploid (2n) number of this cell is 8 how many homologous pairs are present?
23. what stage of mitosis in which chromosomes begin to undergo a condensation process that will continue until metaphase?a. interphaseb. telophasec. prophased. prometaphase24. this stage of mitosis is characterized by an abrupt separation of sister chromatidsa. interphaseb. cytokinesisc. anaphased. prophase
Select true or false for each of the following statements regarding anaphase I. Sister chromatids remain attached at the centromeres. Answertruefalse Homologous chromosomes remain attached at the centromeres. Answertruefalse Sister chromatids are pulled apart. Answertruefalse Homologous chromosomes are pulled apart. Answertruefalse Chiasmata are broken. Answertruefalse
Need help If the mitotic spindle does not correctly attach to chromosome kinetochores, the spindle assembly checkpoint will be activated. Select all correct outcomes for chromosomes not correctly attached to mitotic spindle A) centrosome duplication will not occur B) M cyclin will be degraded C) APC will be inhibited D) chromosomes will not segregate E) Mad2 will bind to unattached kinetochores F) mitosis will halt at metaphase/anaphase transition
When do sister chromatids separate in meosis? Question 30 options: Metaphase II Prophase II Prophase I Metaphase I