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

Budding, What processes occur during the budding of yeast?

What processes occur during the budding of yeast?

Rectum examination of new born, Rectum check for anal patency and p...

Rectum check for anal patency and passage of meconium and observe whether meconium is passed or not. Confirm its patency then pass a catheter or gloved finger  check if

Explain the food applications of locust bean gum, Food Applications of Locu...

Food Applications of Locust bean gum Locust bean gum has multiple applications in food industry.  Let us focus on a few of the important ones: Locust bean gum has been u

What is the use of uristix, What is the Use of Uristix There are some e...

What is the Use of Uristix There are some enzymatic products and reagents impregnated on paper or plastic strips and dipping them in urine provide the results in less time comp

Define carbohydrate requirement for cancer patients, Define Carbohydrate re...

Define Carbohydrate requirement for cancer patients? Adequate amount (60% of total energy) of carbohydrates should be provided. If a very high calorie diet is being given, emph

Determine about the parameters of fitness, Determine about the Parameters o...

Determine about the Parameters of Fitness? There are five basic components of physical fitness, which involve heart, lungs, strength, endurance and flexibility. To improve the

What are the merits of the closed circulatory system, Q. What are the merit...

Q. What are the merits of the closed circulatory system over the open circulatory system? The closed circulatory system is more resourceful since blood circulates only inside b

Define role of thiamin in the conversion carbohydrate to fat, Define the Ro...

Define the Role of Thiamin in the conversion carbohydrate to fats? Thiamin helps in the initial steps of fatty acid and sterol production. In this way, thiamin also helps co

Bracketed keys to identifying plants and animals, Q. Bracketed Keys to iden...

Q. Bracketed Keys to identifying plants and animals? In bracketed keys two couplet leads of the same rank are bracketed together. The alternative clues or couplets are written

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