A researcher is studying mitosis in a novel diploid organism with 2n = 16 chromosomes. During metaphase, a drug is applied that inhibits the separation of sister chromatids but allows the cell to progress through anaphase and telophase. At the end of this aberrant cell division, what is the most likely chromosomal composition of the resulting daughter cells?
Two diploid cells (2n=16) each
One diploid cell (2n=16) and one cell with no chromosomes
One tetraploid cell (4n=32)
Two cells with 8 chromosomes each
Related Questions
What is the average duration for mitosis?
3 min 30 min
3 hr to 5 hr
30 min to 3 hr
2 hr to 3 hr
The morphology of chromosomes can be studied most easily in
Prophase
Metaphase
Anaphase
Telophase
The morphology of chromosomes can be studied most easily in
Prophase
Metaphase
Anaphase
Telophase
The spindle microtubules are polar, their orientation is
Positive (+) and negative (-) both ends towards the equator
Positive (+) ends towards the poles
negative (-) ends towards the poles
Positive (+) and negative (-) both ends towards the poles
A cell plate is laid down during
Cytokinesis
Karyokinesis
Interphase
None of these
Mitosis or the equational division is usually restricted to …A… cells. However, in some lower plants and in some social insects …B… cells also divide by mitosis.
Choose the correct option for A and B from the given options
A B
Haploid; diploid
Haploid; haploid
Diploid; diploid
Diploid; haploid
At which stage of cell cycle colchicine arrests the spindle?
Anaphase
Prophase
Telophase
Interphase
I. Phases of cell cycle are controlled by proteins, …A… and …B…
II. There are two regulatory mechanisms, called …C… which take decision about cell division.
III. The second check point, called …D… is responsible for transition from to M-phase.
Identify A-D to complete the given statements (I-III)
A-cyclins; B-CdKs; C-check points; D-mitotic cyclin (Cm)
A-cyclins; B-check points; C-mitotic cyclin, D-CdKs
A-mitotic cyclin (Cm), B-CdKs; C-check points, D-Cyclin
A-mitotic cyclin (Cm), B-cyclins; C-check points, D-CdKs
During which phase of the cell cycle does DNA replication occur, which is a prerequisite for mitosis?
G1 phase
S phase
G2 phase
M phase
Choose the correct combination of options to select the correct statement for prophase
I. Chromosomal material condenses to form compact mitotic chromosomes
II. The assembly of mitotic spindle is initiated by the microtubules
III. Cells do not show organelles when viewed under the prophase
IV. The nucleolus or nucleoli degenerate completely
I, II and III
I, II and IV
II, III and IV
I, III and IV
