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!
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 gradient system as the cut anterior surface will make a head and the cut posterior surface will form a head. As in Hydra, middle pieces are able of regenerating both a head and a tail. Identical to the Hydra there is an exception to this rule, for if the middle piece is too thin as compared to the planarian segment will grow two heads.
It is believed that the anterior-posterior gradient is not efficiently delineated in such a small segment and that the piece cannot determine "Which end is up", as neither end of the segment has an advantage over the other. Evidence exists that the polarity gradient is due to metabolic activity and that the much more metabolically active end makes the head. Two-headed flatworms are so produced by removing anterior posterior metabolic gradient. It has also been observed that flatworms in addition to retaining anterior-posterior polarity can also regenerate the missing half if split longitudinally. It is believed that the pattern of planaria regeneration is similar to hydra as it also controlled by diffusible gradients.
Agreed-upon Procedures - Non-assurance Engagements Within an engagement to present agreed-upon procedures, the auditor is engaged to carry out those procedures of an audit nat
Explain Need For Microbiological Analysis of Environment Samples? Once the food is harvested, it passes through various operating steps before reaching the consumer. These step
What is the main theory opposed to evolution? The major theory that opposes the evolution theory on the explanation of how species emerged (phylogenesis) is fixism.
Why is sub-culturing essential in plant tissue culture? Explain the process of heterosis. How is it dissimilar from inbreeding depression? Where and how is urea produced in
Stability of Natural Colorants in Foods Many attempts have been made to retain colouration by adding chemicals or modifying processing conditions. Ascorbic acid has been claime
In the presence of oxygen, the process of glycolysis produces which of the following products? A) 2 glycerol B) 1 lactate C) 2 lactate D) 2 pyruvate E) 1 pyruvate
Which of the following are eukaryotic? Bacteria protists fungi animals' archaea plants and animals only all of the choices are eukaryotic.
In biological studies which of the below is used to refer to iron-containing, oxygen-binding, conjugated protein complex present in sarcoplasm of muscle cells? a) Myelin b)
How Sugar is used in Bakery Application? In bakery applications, sugars are used to impart flavor, aroma and color. During the mixing process, excess gluten development can mak
State the Classification of nervous system Neurological disorders can be categorised according to the primary location affected, the primary type of dysfunction involved, or th
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd