In a plant cell undergoing mitosis, a mutation disrupts the function of phragmoplastin. Which stage of mitosis will be most directly affected, and what would be the observable consequence?
Prophase; failure of chromosome condensation
Metaphase; misalignment of chromosomes at the metaphase plate
Anaphase; inability of sister chromatids to separate
Cytokinesis; incomplete cell wall formation
Related Questions
Which stage of cell division is affected if a plant cell has double the expected number of chromosomes and lacks a cell plate, and what is the resulting cellular condition?
Prophase; aneuploidy
Metaphase; apoptosis
Anaphase; nondisjunction
Telophase/Cytokinesis; polyploidy
Identify A-C in the given statements, and choose the correct option
I. Spindle microtubules that extend from the two poles of a dividing cell are called β¦Aβ¦
II. A centromere connects two identical copies of a single chromosomes. These two copies are called β¦Bβ¦
III. In βXβ phase, the paired chromosomes separate and begin moving to opposite ends of the cell. This βXβ is called β¦Cβ¦
A-kinetochore fibres; B-chromatids; C-metaphase
A-polar fibres; B-homologous chromosomes; C-Prophase
A-polar fibres; B-sister chromatids; C-anaphase
A-kinetochore fibres; B-asters; C-anaphase
The phragmoplast is organized at the
Beginning of anaphase
End of anaphase
Beginning of telophase
End of telophase
The liquid endosperm inside a tender coconut is equivalent to:
Free-nuclear endosperm
Cellular endosperm
Hemi-endosperm
Ruminate endosperm
Small disc-shaped structures at the surface of the centromeres that appear during metaphase are
Kinetochores
Metaphase plate
Spindle fibres
Chromatid
Mitosis is a process by which eukaryotic cells
Grow
Get specialized in structure
Multiply
Expose the genes
At which stage of cell cycle colchicine arrests the spindle?
Anaphase
Prophase
Telophase
Interphase
Which of the following serves as mitotic spindle poison?
Tubulin
Colchicine
I. Phases of cell cycle are controlled by proteins, β¦Aβ¦ and β¦Bβ¦
II. There are two regulatory mechanisms, called β¦Cβ¦ which take decision about cell division.
III. The second check point, called β¦Dβ¦ 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
The liquid endosperm inside a tender coconut is:
Cellular endosperm
Free-nuclear endosperm
Hemi-nuclear endosperm
Ruminate endosperm