Phases of karyokinesis, Biology

Assignment Help:

Phases of Karyokinesis:

Karyokinesis can further be divided into prophase, metaphase, anaphase and telophase.

1-Prophase: (pro= before)

Chromatin: During Interphase (non- dividing) of the cell cycle the chromosomes are not visible even with electron microscope, but using histological stains for DNA, a network of very fine threads can be visualized. This network is called as chromatin.

Appearance of chromosomes: The chromatin material gets condensed by folding and chromosomes appear as thin threads at the beginning of prophase.

Appearance of Sister chromatids: Chromosomes becomes more and more thick ultimately each chromosomes is visible having two sister chromatids, attached at centromere.

Disappearance of Nucleoli: Towards the end of the prophase, nuclear envelope disappears and nuclear material is released in the cytoplasm.

Disappearance of Nucleoli: Nucleoli disappear.

Mitotic Apparatus: Mitotic apparatus is organized.


Related Discussions:- Phases of karyokinesis

What are the benefits of plant-incorporated protectants, What are the benef...

What are the benefits of plant-incorporated protectants? Plant-incorporated protectants can be a promising pest management alternative where traditional pesticides may not be a

Energy demand for active or moderately active lifestyles, Energy demand for...

Energy demand for Active or moderately active lifestyles? These people have occupations that are not strenuous in terms of energy demands, but involve more energy expenditure t

Mrna molecule codifies only one kind of protein, Q. An mRNA molecule codifi...

Q. An mRNA molecule codifies only one kind of protein? Eukaryotic cells have monocistronic mRNA, that is each mRNA codifies only one polypeptide chain, Prokaryotes can present

Thermal properties-specific heat-water properties, Thermal Properties ...

Thermal Properties The range of temperature variatidn in the aquatic environment is smaller in comparison to air. This means the rate of change of temperature is slower in the

Introduction to avian infectious diseases, Poultry birds are affected with ...

Poultry birds are affected with many types of ailments; broadly these are classified on the basis of etiology as non-infectious and infectious conditions. Non-infectious diseases a

Explain about anabolism, Q. Explain about Anabolism? Anabolism is a pro...

Q. Explain about Anabolism? Anabolism is a process of synthesis or making of larger or complex molecules from smaller molecules. The molecules are of different kinds like hormo

What are the four groups of protozoans, What are the four groups of protozo...

What are the four groups of protozoans? The four major groups of protozoans are the sarcodines (that form pseudopods, like amoebae), the mastigophores (flagellated, such as the

How dissimilar are walls of these two types of blood vessel, Are the arteri...

Are the arteries or the veins constituted of more muscle tissue? How dissimilar are the walls of these two types of blood vessels? The arterial system has thicker muscle walls

Define prevalence of weight management, Define Prevalence of Weight Managem...

Define Prevalence of Weight Management? WHO (1998) estimates that in developing countries about 245 million adults are moderately underweight and 93 million severely underweigh

Merits of micro propagation, Merits of Micro Propagation The special m...

Merits of Micro Propagation The special merits of micro propagation are: 1. It considerably increases the rate of multiplication 2. High rate of multiplication can be ma

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