Botany-Cell Cycle Phases
NEET Botany Cell Cycle Phases MCQ Question
Type: MCQ-diagram based-Hard-Class 11
Consider a diagram showing a cell at the metaphase stage of mitosis, where chromosomes are aligned at the cell's equatorial plane. Which structure is primarily responsible for holding the sister chromatids together at this stage?
A
Centromere
B
Kinetochore
C
Spindle fiber
D
Nuclear envelope
Correct Answer
Option A
Detailed Explanation
At metaphase, the centromere holds the sister chromatids together. The nuclear envelope is disintegrated, kinetochores are involved in attachment to spindle fibers, and spindle fibers assist in chromosome movement.
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