Cytosketal mechanism, Biology

Assignment Help:

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.

1744_Cytosketal Mechanism.png

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.


Related Discussions:- Cytosketal mechanism

Leucosolenia, special character of leucosolenia

special character of leucosolenia

What are age pyramids, What are age pyramids? Age pyramids are graphica...

What are age pyramids? Age pyramids are graphical representations in form of superposed rectangles every representing the number of individuals contained in age ranges into whi

Mammals - regeneration in vertebrates, Mammals - Regeneration in Vertebrate...

Mammals - Regeneration in Vertebrates Mammals are not capable of regenerating limb or tails. However, there are a few exceptions where lost tissues are regenerated. The annual

Factors affects oxygen dissociation curve -organic phosphate, Factors affec...

Factors affects Oxygen Dissociation Curve -Organic Phosphate The presence of organic phosphates in the red blood cells helps to explain many peculiarities of the oxygen dissoc

Explain the function of myosin and albumin, What are respectively some rema...

What are respectively some remarkable functions of myosin, CD4, albumin, keratin, immunoglobulin, reverse transcriptase, hemoglobin and insulin? Myosin is a protein that when a

Determine the types of suture materials, Types of suture materials The ...

Types of suture materials The suture technique and material selection should be based on a knowledge of the desired goals of the respective surgical procedures and the physical

Valve thrombosis-complications of prosthetic valves, Valve Thrombosis :  ...

Valve Thrombosis :  Valve thrombosis causes sudden deterioration of the patient's haemodyarnics. A stuck valve may produce both stenosis and incompetence. If diagnosed early s

Define some detrimental effects of fungi, Define some Detrimental Effects o...

Define some Detrimental Effects of Fungi? These cause diseases of animals and humans. These either cause superficial mycoses (infection of skin, hair and nails) or systemic

Light and heavy soils-physical properties of soil, Light and Heavy Soils ...

Light and Heavy Soils The presence of silt and especially clay in a soil imparts to it a fine texture, and a slow water and air movement. Such a soil is highly plastic becoming

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd