Which of the following accurately describes the role of motor proteins during anaphase of mitosis?
Kinesins move chromosomes towards the minus ends of kinetochore microtubules, and dyneins move chromosomes towards the plus ends.
Dyneins move chromosomes towards the poles along kinetochore microtubules, while kinesins are involved in cytokinesis.
Kinesins move chromosomes towards the plus ends of kinetochore microtubules, while dyneins move the poles apart by acting on astral microtubules.
Both kinesins and dyneins move chromosomes towards the poles along kinetochore microtubules, with kinesins acting on the leading edge and dyneins on the trailing edge.
Related Questions
The spindle fibers attach to which specific region of the chromosome during mitosis?
Centromere
Telomere
Kinetochore
Chromatid
Which of the following is NOT a characteristic outcome of mitosis?
Two identical daughter cells
Growth and repair of tissues
Same number of chromosomes as the parent cell
Reduction of chromosome number by half
In which of the following stage of the cell cycle, the attachment of spindle fibres to kinetochores of chromosomes occurs?
Prophase
Metaphase
Anaphase
Telophase
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?
Recombination of chromosome arms will occur
Chromosomes will not condense
Chromosomes will be fragmented
Chromosomes will not segregate
If a cell has 20 chromosomes at the beginning of mitosis, how many chromosomes will each daughter cell have at the end of mitosis?
10
20
40
80
Arrange the following stages of mitosis in the correct sequence: I. Telophase II. Metaphase III. Prophase IV. Anaphase
III, II, IV, I
II, III, IV, I
I, II, III, IV
IV, III, II, I
If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
Metaphase
Telophase
Anaphase
Prophase
What is the main purpose of mitosis?
Gamete formation
Genetic variation
Growth and repair of tissues
Reduction in chromosome number
Centrioles undergo duplication during (i) of (ii), and begin to move towards opposite poles of the cell during (iii) stage of (iv)
i-S phase, ii-inter phase, iii- Prophase, iv-Mitosis
i-S phase, ii-Inter phase, iii-Anaphase, iv- Mitosis
i-Prophase, ii-Mitosis, iii-Metaphase, iv- Mitosis
i-Prophase, ii-Mitosis, iii-Anaphase, iv-Mitosis
At which stage of mitosis, chromatids separated and passes to different poles?
Prophase
Metaphase
Anaphase
Telophase
