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

Shortness of breath, Shortness of Breath It is a subjective sensation...

Shortness of Breath It is a subjective sensation of being unable too draw in enough air to breathe. Most often, this is associated with congestive cardiac failure and may

Problem of polarity in regeneration in planarians, Problem of Polarity in R...

Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie

How is the early diagnosis of genetic diseases usually done, How is the ear...

How is the early diagnosis of genetic diseases usually done? The Genetic disease may be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by D

Health and economic development - linkage and impact, Health And Economic D...

Health And Economic Development - Linkage And Impact It is apparent that the relationship between health and development is a two wayprocess. While healthy people in a country

Roles of fatty acid, Fatty acids have four main biological roles: 1.  Th...

Fatty acids have four main biological roles: 1.  They are used to create sphingolipids and glycerophospholipids which are necessary elements of biological membranes; 2.  Nume

Adhesion of cells to extracellular cell matrix, Adhesion of Cells to Extrac...

Adhesion of Cells to Extracellular Cell Matrix You know that the cells in order to move or change shape, adhere to each other or to the substratum in their environment. Usual

Explain sexual reproduction, Explain Sexual Reproduction ? In most hig...

Explain Sexual Reproduction ? In most higher organisms, replication occurs by sexual reproduction. Sexual reproduction begins with a process called meiosis. The products of me

Describe some food borne diseases, Q. Describe some Food borne disease? ...

Q. Describe some Food borne disease? Food borne diseases are caused by the ingestion of foods containing toxic or infectious agents. In India, the diseases transmitted by foo

Instrument examination and care, Instrument Examination and Care Cleani...

Instrument Examination and Care Cleaning instruments, provides a good opportunity to examine, replace or remove damaged instruments; lubricate items such as handpieces; and oth

Determine minerals requirements at high altitude, Determine Minerals Requir...

Determine Minerals Requirements at high altitude? Increased urinary excretion of Nat and K + on exposure to hypoxia is reported while some workers have found only increase in

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