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 Potency of Blastema Cells
The local cells are accountable for regeneration. Now you could ask which of the blastema cells differentiated into which type of limb tissues? Do differentiated cells like muscles, cartilage etc., lose their specialised properties, proliferate and consequently re-differentiate solely in accordance along with their previous differentiated state that is into muscle, cartilage etc respectively? Or, do the dedifferentiated cells truly turns into pluripotent cells capable of forming a variety of differentiated cells. To serch answer scientists performed an experiment where the skeleton was removed from the limb segment of an adult newt. This was-done by extirpating the bone so that the limb was lastingly without a skeleton. Then the boneless segment was amputated. It was observed that the limb that regenerated also had its skeletal component. This clearly pointed out that skeletal elements can differentiate from a blastema which received no contribution from preexisting skeleton. Thus tissues, in particular skeletal ones, do not require to be formed by cells from their particular tissue counterparts in the stump.
Figure: Stump counterparts not - needed for regeneration of the distal parts of the limb skeleton. a: forelimb skeleton of a newt. b: the humerus is excised and then the limb is amputated through the upper arm. c: regeneration of distal parts, including skeleton, proceeds from the cut surface distally.
Phototropic curvature is the result of uneven distribution of : 1. Gibberellin 2. Phytochrome 3. Cytokinins 4. Auxin Auxin
PHOSPHOLIPIDS Most abundant lipid present in cell membrane, also called membrane lipid. It is made up of lipid & phosphoric acid. The basic phospholipid is phosphat
Q. Where are the adrenal glands located? How many are they and what are their portions? Each adrenal gland is located on the top of each kidney (forming a hat-like structure fo
ENDOPLASMIC RETICULUM It is also known as Endoskeleton of the cell, Endomembranous system of the cell. Garnier (1897) first observed them and called Ergastoplasm. E.R.
How Primarily Energy Deficiency cause PEM? Surveys on preschool children in different parts of the country reveal that PEM is primarily due to dietary energy deficiency arising
Is a gene a triplet of consecutive DNA nucleotides? A gene is not a triplet of DNA nucleotides with their respective nitrogen-containing bases, like AAG or CGT. The nucleotide
Which terrestrial vertebrate group is extremely rare in deserts? Amphibians are terrestrial vertebrates extremely rare in desert environments (although there are a some species
Determine the Modification of native starch Modification of native starch can be either physical or chemical. Chemical modification includes reaction of starch with acid or al
Energy from water or hydropower Hydroelectricity is the energy produce from the kinetic energy of water falling from height. Approximately 25% of world electricity
Q. Can Pathophysiology causes cardiovascular disease? Cigarette use activates platelets, increases circulating fibrinogen, increases heart rate, and elevates blood pressure. It
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