Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETBotanyCell Cycle and Cell Division

What is the composition of chromosomes in prophase?

Options

  1. ASingle chromatid
  2. BTwo chromatids attached together at the centromere
  3. CFour chromatids attached together at the centromere
  4. DEight chromatids attached together at the centromere

Correct answer

B. Two chromatids attached together at the centromere

Step-by-step solution

Chromosomal material condenses to form compact mitotic chromosomes. Chromosomes are seen to be composed of two chromatids attached together at the centromere. Centrosome which had undergone duplication during interphase, begins to move towards opposite poles of the cell. Each centrosome radiates out microtubules called asters. The two asters together with spindle fibres forms mitotic apparatus.

Practice Cell Cycle and Cell Division on Quantrex Academy →

More from Cell Cycle and Cell Division

The correct sequence of adult cell cycle phases is __________. 2026Match List I with List II : List I (Phase of cell cycle) List II (Activity) A. G₁ phase I. Actual cell division occurs B. S phase II. Cell is metabolically active and continuously 2026Given below are two statements : Statement I : Chromosomes are fully condensed at the end of prophase I. Statement II : Meiosis I resembles mitosis. In the light of the above state 2026What is the main function of the spindle fibers during mitosis? 2025Match List-I with List-II. array |l|l|r|l| & array l List-I Event array & & array l List-II Stage of Prophase-I (Meiosis-I) array A. & Chiasmata formation & I. & Pachytene B. & Cro 2024Match List-I with List-II array |l|l|l|l| & List-I & & List-II A. & Cells are metabolically active and proliferate & I. & G ₂ phase B. & DNA replication takes place & II. & G ₁ pha 2024Recombination between homologous chromosomes is completed by the end of 2024Given below are two statements: Statement I : Chromosomes become gradually visible under light microscope during leptotene stage. Statement II : The beginning of diplotene stage is 2024 Full Cell Cycle and Cell Division list All NEET PYQs