Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Meroblastic or partial cleavage
The egg does not divide totally because divisions are restricted to only a part of the egg where as the rest of the egg remains completely uncleaved. It is of two types:
A. Discoidal meroblastic cleavage: It occurs in the heavily yoked macrolecithal and highly telolecithal eggs, as for instance in cephalopod molluscs, reptiles, birds and monotremes (egg laying mammals). The cleavage is restricted to the cytoplasmic germinal disc located at the animal pole. Even the germinal disc divides incompletely where as the entire yolk mass remains undivided.
B. Superficial meroblastic cleavage: This takes place in the centrolecithal eggs of insects. Cell divisions are restricted to the peripheral cytoplasmic layer whereas the centrally located yolky is left undivided.
Occurrence of Biotin Biotin occurs in nature very likely in all living cells, although usually in minute concentrations. In animal organs and in yeast, biotin is mainly cont
What is Lymphatic System in human biology? The lymphatic system maintains fluid balance and serves in protecting the body from disease. The primary organs of the lymphatic syst
Some species of plant are strongly adapted to pollination by certain insects. Characteristics which are regarded as adaptations to pollination by bees are: ( a) white o
"Height" is an example of a gene, but "Short" is an example of...
Describe frequently respiratory infactions to recoganize congenital heart disease ? Frequent Respiratory Infections: Respiratory infections that are frequent, severe and diffic
What is bicuspid aortic? Bicuspid aortic valve is the most common form of CHD seen in adults. Isolated bicuspid aortic valves may be stenotic or non-stenotic to start with. T
What are the types of good in the demand curve? Some types of good are as follows: • Normal good: When incomes of consumers/households increase the quantity demanded wo
H y p o ma g n e s e m i a It is also known as grass staggers or lactation or grass tetany and results in clonic and tonic muscular spasms and convulsions. E
What does it mean when a plasmid is cleaved with Hind III and Sca I? Does that mean that it opens up at those two locations and I have to insert whatever is complementary to it?
What are respiratory pigments? What is the respiratory pigment present in some arthropods? Which is the analogous molecule in humans? Respiratory pigments are molecules able t
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd