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

Deficiency diseases-ketosis, Ketosis Ketosis, also known as acetonaemia...

Ketosis Ketosis, also known as acetonaemia or ketonaemia is a multifactorial disorder that commonly occurs in dairy cows and buffaloes immediately after calving or in early lac

Replication of chromatin, Whenever a chromosome is replicated the replicati...

Whenever a chromosome is replicated the replication machinery passes by the nucleosomes without deleting the histones from the DNA. How this happens is since not fully understood.

In how many form glycogen synthase exists, Glycogen  synthase exists  in t...

Glycogen  synthase exists  in two forms:   the phosphorylated form designated  as  'D' form is the  inactive one and  the dephoshorylated form designated as  'I'  form is the activ

Tanco beans plant, what are the origin, morphology, active constituents, us...

what are the origin, morphology, active constituents, uses and market preparation of tanco beans ?

Explain nutritional support management for radiation therapy, Explain Nutri...

Explain Nutritional Support Management for radiation therapy? For managing these patients on radiation therapy, the following measures can be under taken: 1. Administration

What is biosynthetic pathways, The intermediates in the cycle give precurso...

The intermediates in the cycle give precursors for various biosynthetic pathways. An instance is as given below: -  From citrate synthesis of fatty acids; -  Amino acid synth

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

Natural toxins, Some plants and animals originate food contain toxic substa...

Some plants and animals originate food contain toxic substances. Some pulses and legumes contain a number of toxic substances such as protease inhibitors, lathyrogens, and flavism

Explain the naturally occurring food chemicals, Explain the Naturally occur...

Explain the Naturally occurring Food Chemicals? Pharmacologically active substances include vasoactive amines such as histamine, tyramine, tryptamine, phenylethylamine, and ser

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