Select the correct option with respect to mitosis.
Golgi complex and endoplasmic reticulum are still visible at the end of prophase
Chromosomes align along the equatorial plate in metaphase
Chromatids start moving towards opposite poles in telophase
Chromatids separate but remain in the centre of the cell in anaphase
- Spindle fibres attach to kinetochores of chromosomes
- Nucleolus, Golgi complex and ER reform
- Centromeres split and chromatids separate
- DNA duplicates
During metaphase of mitosis, chromosomes:
Line up at the equator
Break and disintegrate
Move towards the pole
Choose the incorrect statement(s) regarding Metaphase of Mitosis.
I. Each chromosome splits up to form 2 chromatids.
II. The newly formed chromatids remain united at centromere on two different
III. Has only one of unit of DNA from each parent.
IV. Spindle fibres attach to centromere to pull the chromatids toward the poles.
II & III
III & I
I & II
Chromosome structure can be studied clearly during which stage?
1.Chromosomes are doubled.
2.Spindle fibres attach to the chromosomes.
3.Chromosomes are arranged at equatorial plate.
If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you conveniently look into?
2, 1, 2, 2
2, 1, 1, 1
2, 1, 2, 1
2, 2, 2, 2
Chromosomes can be counted best at the stage of: