Principles governing cleavage, Biology

Assignment Help:

Principles Governing Cleavage

a) The nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing cells, e.g., in isolecithal eggs or microlecithal eggs, the spindle is formed centrally in the cell while in the telolecithal eggs, and it is formed nearer the animal pole.

b) Each new cleavage furrow tends to intersect the plane of the preceding cleavage furrow at right angle.

c) The cells or blastomeres tend to divide into two equal sized daughter cells unless yolk is unevenly distributed.

d) Free sides of the blastomeres tend to become rounded.


Related Discussions:- Principles governing cleavage

Describe the methods of assessment, Describe the Methods of Assessment ...

Describe the Methods of Assessment The four general principles outlined above, that is, adaptation, brain and behaviour, context, and development serve as the foundation for th

Fundamental cardiac unit, The fundamental contractile unit is the sarcomere...

The fundamental contractile unit is the sarcomere. Each muscle cell apart from the nucleus, mitochondria and other structures contains parallel fibrils. Sarcomere is a subunit of t

Explain about the basidiomycota - fungi, Explain about the Basidiomycota - ...

Explain about the Basidiomycota - Fungi? Basidiomycota - Fungi in this division are called basidiomycetes or club fungi. Sexual structure is known as basidium, which is club-sh

Define basic terminology in relation to nutritional needs, Define Basic Ter...

Define Basic Terminology in Relation to Nutritional Requirements? By now you would have a good understanding that nutrient requirements are affected by a number of factors and

Explain some feeding considerations or nutrition support, Explain some Feed...

Explain some Feeding Considerations or Nutrition Support? The preferred route for feeding the patient should be oral intake1 via the utilization of gastrointestinal tract. If o

Headache associated with neurological diseases, Headache Associated with Ne...

Headache Associated with Neurological Diseases Headache is a symptom of many nervous system disorders, usually resulting from the distortion of pain sensitive structures. Commo

How many asymmetric the amino acid serine have, How many asymmetric carbons...

How many asymmetric carbons does the amino acid serine have? Please explain with a strucutral diagram if possible.

Determine the purposes of vital signs, Determine the purposes of vital sign...

Determine the purposes of vital signs The vital signs reflect the functioning of vital organs of the body i.e. heart, brain and lungs. They indicate the basic functions of body

Explain functional property of foaming, Normal 0 false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain the acid fast staining, Explain the Acid Fast Staining? Acid fa...

Explain the Acid Fast Staining? Acid fast staining is a type of differential staining used for identification of certain bacteria, e.g. Mycobacteria which cannot be stained rea

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