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
Congression is a phenomenon of
Movement of sister chromatids towards the poles
Pairing of homologous chromosomes
Separation of paired chromosomes
Bringing the chromosomes on equator of spindle apparatus
Duplication of centriole occur in
prophase
metaphase
s - phase
anaphase
Which stages of mitosis is known for occurrence of cytokinesis?
Metaphase
Telophase
Anaphase
None of these
A scientist observes a dividing cell under a microscope. No crossing over is observed. Which type of cell division is MOST likely being observed?
Meiosis I
Meiosis II
Mitosis
Cytokinesis
At which stage of cell cycle colchicine arrests the spindle?
Anaphase
Prophase
Telophase
Interphase
Which phase of mitosis is characterized by the condensation of chromatin into visible chromosomes?
Prophase
Metaphase
Anaphase
Telophase
I. Chromosomes cluster at opposite spindle poles their identity is lost as discrete elements
II. Nuclear envelope assembles around the chromosome clusters
III. Nucleolus, Golgi complex and ER reform
Above features indicates which phase of mitosis
Anaphase
Telophase
Cytokinesis
S-phase
The Anaphase Promoting Complex (APC) targets specific proteins for degradation during mitosis. A mutation in the gene encoding APC would most likely result in which of the following?
Premature entry into anaphase
Inability to progress from metaphase to anaphase
Failure of DNA replication
Increased rate of cytokinesis
A cell in G2 phase has 4.8 pg of DNA. After completing mitosis, how much DNA would each daughter cell contain if cytokinesis is successful?
9.6 pg
4.8 pg
2.4 pg
1.2 pg
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
