A drug called colchicine is shown to interfere especially with spindle microtubules formation during mitosis. This would result in

Dehydration of chromosomes

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Despiralization of chromosomes

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Arrest of chromosome movements

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Arrest of centrioles movements

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B Arrest of chromosome movements
Colchicine is a chemical obtained from the plant Colchicum autumnale. It arrests the spindle fibres at metaphase stage of cell division and hence, chromosomes are not separated at anaphase stage due to which ploidy level of the cell is increased.
So, the correct answer is 'Arrest of chromosome movements'.

Suggest Corrections

Similar questions

Q. A drug called colchicine interferes in mitosis during the spindle microtubule formation; it does so by

Identify the stage of Mitosis by inspecting the image and key changes listed.

Key changes:

* Nucleolus and nuclear membrane disappears.

* Organelles disappear, formation of chromosomes.

* Centrioles organise to form spindle fibres.

Q. If cells in process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested?

Question 8
Which of the events listed below is not observed during mitosis?
(a) Chromatin condensation
(b) Movement of centrioles to opposite poles
(c) Appearance of chromosomes with two chromosome joined together at the centromere
(d) Crossing over

As spindle fibres are formed by centrioles during mitosis. But they are absent in plant cells. So who forms spindle fibres in plants in order to carry out mitosis.

-Uby. H

Join BYJU'S Learning Program