Metaphase, Biology

Assignment Help:

Metaphase

This  is a period  of short duration, the  chromosomes are  at the  stage of their  maximum  condensation and , hence more  clearly  visible ,Upon  each  side  of their  centromeres,  a plate or cup like  dise ,formed  of protein  complexes  and  called  kinetochore , appears in the  depression  of the chromatid  of this  side  the  kinetochore  of each side  is seen to be attached  to  a bundle  of a number ( usually  20  to 40 )  of newly  formed spindle  fibres   called discontinuous , or  attachment , or chromosomal ,  or interzonal  spindle  fibres . The  opposite  ends of  these  fibres   are attached to the  spindle poles of their  respective sides. These  fibres pull  the scattered  chromosomes and  align then  in a fixed  specific  manner at the equatorial plane  of the spindle  forming  what is  known  as the equatorial or  metaphase plate.


Related Discussions:- Metaphase

What is chylomicrons , Chylomicrons, the widest of the lipoproteins, are...

Chylomicrons, the widest of the lipoproteins, are synthesized in the intestine. They including ingested triacylglycerols to other tissues, mainly skeletal muscle and adipose tissue

Temperature-environmental components, TEMPERATURE Temperature is a majo...

TEMPERATURE Temperature is a major physical environmental factor which profoundly influences the vital activities of living organisms like, metabolism, growth and reproduction.

Functions of skeleton, FUNCTIONS OF SKELETON - 1.      Support. 2.  ...

FUNCTIONS OF SKELETON - 1.      Support. 2.      To give shape to the body. 3.      Protection of different organs. 4.       Site for muscle attachment. 5.       He

Explain anabolic reactions, Anabolic reactions: The  intermediates of citr...

Anabolic reactions: The  intermediates of citric acid cycle are used  as precursors  in tlie biosynthesis of many compounds  like synthesis of glucose  from carbon skeletons of am

What is secondary growth explain briefly, What is Secondary Growth explain ...

What is Secondary Growth explain briefly? Secondary Growth in Stems : Young developing shoots increase in height by adding new cells, which are produced by the apical meriste

Respiration in adult amphibians and fishes, Q. Do amphibians have direct de...

Q. Do amphibians have direct development? In amphibians the embryonic development is indirect there is a larval stage. Q. How different are the respiration in adult amphibi

Describe splitting sequence of s2, Describe Splitting sequence of S 2 ? ...

Describe Splitting sequence of S 2 ? Even though the pulmonary valve closes at about 20 mm Hg and aortic valve at 100 mm Hg, the aortic closure occurs first as the impendence

Explain the term active transport, Explain the term active transport? ...

Explain the term active transport? Active Transport :  At intervals, protein assemblies involved in selective, or active transport of materials are inserted into the cell mem

Determine the two different alleles, What is meant by saying that in relati...

What is meant by saying that in relation to a given trait conditioned by a gene with two different alleles the gametes are always "pure"? To say that gametes are pure means tha

Define the organism of clotting process, Q. How does the organism understan...

Q. How does the organism understand that a clotting process must begin? When there is some tissue wound with injury of blood vessel the platelets and endothelial cells of the w

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