Cytosketal Mechanism

There are two co-ordinate processes in the cleavage (or cell division) that is displayed in Figure.

Karyokinesis

The mitotic division of nucleus depends on the creation of mitotic spindle that is constituted by microtubules of which the tubulin protein is the structural unit Treatment of the egg along with the drug colchicines disrupts the microtubules and arrests Karyokinesis at metaphase.

Figure:  Role of microtubules and microfilaments in cell divisions

Cytokinesis

Division of the cell depends on the contractile microfilaments of which protein actin is the structural unit. A ring of microfilament emerges in the cortex around the cell in which the cleavage furrow is formed. Contraction of the microfilament ring in the purse-string manner deepens the furrow finally cutting the cell into two. Treatment of the egg along with cytochalasin B inhibits the organisation of contractile ring of microfilaments that is why cleavage furrow is not made and cytokinesis does not take place.

Posted Date: 1/25/2013 3:21:13 AM | Location : United States

Ask an Expert

Related Discussions:- Cytosketal mechanism, Assignment Help, Ask Question on Cytosketal mechanism, Get Answer, Expert's Help, Cytosketal mechanism Discussions

Write discussion on Cytosketal mechanism
Your posts are moderated

Write your message here..

Related Questions

Biochemistery., how i prepare my best assignment on DNA Polymerase 1 2 and ... how i prepare my best assignment on DNA Polymerase 1 2 and 3

Bovine ephemeral fever, Bovine ephemeral fever Ephemeral fever is commonly... Bovine ephemeral fever Ephemeral fever is commonly known as 'three-day sickness'. It affects mainly cattle and occasionally sheep in India. Causative agent is a mosquito-borne vir

Introduction to meat products, Meat products Meat is an important commo... Meat products Meat is an important commodity in the diet of people in view of its complimentary role in balancing the diet with rich source of amino acids, vitamins and mineral

Explain semi-synthetic gums, Modified or Semi-synthetic Gums These are ... Modified or Semi-synthetic Gums These are natural polymers, which are chemically modified to give a new product with improved functional properties. These also fall into severa

Show coding for stimulus intensity, Q. Show Coding for stimulus intensity? ... Q. Show Coding for stimulus intensity? Coding for stimulus intensity: If AP's are all-or-none responses that do not vary in amplitude, how does the NS distinguish between stim

Operculum - seed appendages, Operculum - Seed Appendages The term oper... Operculum - Seed Appendages The term operculum is applied to a plug-like structure formed in the micropylar portion of the seed by proliferation of cells at the tip of the inn

Epithelial tissue, Honors A&P assignments Honors A&P assignments

What are the features of retrograde peri-implantitis, The Features of Retro... The Features of Retrograde Peri-Implantitis include: - Periapical Bone loss without gingival inflammation. - Microflora consisting mainly of streptococci and nonmotile organ

Define the g1 phase during their cell cycle, What would happen to a cell an... What would happen to a cell and its offspring if the cells did not go by a G1 phase during their cell cycle? Describe Without a G1 growth phase, the cells would not grow to th

What are gibberellins, What are gibberellins? Where are they produced? ... What are gibberellins? Where are they produced? Gibberellins are plant hormones that stimulate plant growth, flowering and fruit formation (also parthenocarpy) and the germina