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!
Phytochrome - Floral Induction
Phytochrome a pigment that exists in two different inter convertible forms was discovered by Hendricks and Borthwrick et. al. and was chemically extracted and purified. Since then exact chemical nature is now established. Phytochrome has two parts the light absorbing portion (chromophore) and the large protein. Action spectra of photoperiodism, germination, and breaking of dormancy etc.-clearly establish phytochrome as the 'photomorphogenesis' pigment as its absorption spectra genuinely overlaps the action spectra of the above phenomenon. Phytochrome was found located mostly in the cell membranes. It exists in red-light absorbing form and far-red light absorbing forms. Phytochrome (R) absorbs red light and is converted into phytochrome (FR), a far-red light absorbing form.
Phytochrome Fr on exposure to far red light is reconverted to phytochrome R. Phytochrome (Fr) can also be converted to phytochrome (R) in prolonged darkness. The action of phytochrome through gene repression and depression production of flowering inducing hormones enzyme activation leading to 'floral apex' from a vegetative apex is roughly understood. But all the steps are not clear yet. Phytochrome regulated morphogenesis results for change in gene 13 transcription. Several phytochrome activated genes have been identified and isolated. One of them is PAL gene.
Explain the role of Bones in human biology? Bone is covered by a tough outer membrane called the periosteum. The periosteum contains systems of capillaries that supply the bone
parts of a typical flower? define its parts and internal parts completely? show complete colourful diagram?
Q. Protein electrophoresis - Measuring Genetic Diversity? This method is now being used to measure genetic diversity. Genes contain the information required to produce enzymes
Q. What is ST segment depression at rest? ST- segment depression has become severe, that is, 3 to 4mm or more in vigorous asymptomatic subjects. If the patient is known to have
Organizational assessments are vital to the introduction of Nurse Case Management (NCM) and Clinical Nurse Leaders (CNL) ( I am in school for the CNL) Use the guidelines below
Define Excretion of toxins and Act as precursors? Excretion of toxins: Glucuronic acid, a metabolite of glucose, combines with chemical and bacterial toxins and some normal met
what''s the role of lungs in terms of excretion? Like the trachea what''s its role in excretory system?
What are the examples of homeostasis? Regulation of body temperature, control of blood glucose levels, the regulation of salt and water balance are the example of homeostasis
Q. Do all molecules of DNA have the same amounts of nitrogenous bases? Number and sequence of nitrogenous bases in DNA molecule are key elements in variations which are found i
The following progeny genotypes were observed: 73 AaBb, 64 aabb, 279 Aabb, 303 aaBb. Using a chi-square test, test whether these two loci show independent assortment? How would
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