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
Related Questions
The spindle fibers attach to which specific region of the chromosome during mitosis?
Centromere
Telomere
Kinetochore
Chromatid
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
During coconut development, the initial stage of endosperm formation within the tender coconut results in:
A cellular mass called cellular endosperm
A multinucleate liquid called free-nuclear endosperm
A partially cellularized structure called helobial endosperm
A solid, layered structure called ruminate endosperm
Chromosomes are arranged along the equator during
Prophase
Metaphase
Anaphase
Telophase
The phragmoplast is organized at the
Beginning of anaphase
End of anaphase
Beginning of telophase
End of telophase
A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in:
Aneuploidy
Polyploidy
Somaclonal variation
Polyteny
The term, mitosis was coined by
Flemming
Strasburger
Remak
Moore
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
Duplication of centriole occur in
prophase
metaphase
s - phase
anaphase
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
