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Effect of Temperature
Certain plants such as the winter rye (Secale cereale) and the biennial strain of henbane (Hyoscyamus Niger) require exposure to low temperature conditions before they start flowering. A phenomenon known as 'vernalization' or 'Yaronization' was noted by the Russian Plant physiologist Gustav Gussner in 1915. Here also embryo or shoot apex seems to be the site of perception and the role of a hormone 'Vernalin" is suggested. Unfortunately like florigen, vernalin has been still elusive. Gibberellin treatment is known to substitute for cold treatment.
Meselson and Stahl demonstrated that DNA replication is a semi-conservative process. Which of the following best explains the definition of "semi-conservative"? A. The two stra
Is there a exchange of cells between the mother and the fetus through the placenta? Under normal conditions, there is not a passage of cells across the placenta during gestati
Which of the following variations on translation would be most disadvantageous for a cell? A) translating polypeptides directly from DNA B) using fewer kinds of tRNA C) having only
Spinal cord The elongated part of CNS that runs downward in the spinal canal as continuationof medulla oblongata is called spinal cord. The functions of the Spinal Cord are
Absence of vesicular glands In some bulls the vesicular glands are either absent or hypoplastic also sometimes accompanied by poorly developed ampullae. A characteristic sympt
#question.what is the mechanism of circulatory system .
Biological Conduits : Freeze dried arterial, bovine MA, human umbilical vein, cryo preserved umbilical vein or artery and omniflow sheep collagen tube grafts also have poor
What is MDRTB MDRTB - For patients with known exposure to multi-drug resistant TB (MDRTB) and a high risk of developing active TB, there are no data-based recommendations. Regi
LIVING MATTER Since at the subatomic level, all matter is basically similar, the fundamental chemical and physical principles are equally applicable to all objects in nature; y
Define Some Food Related Problems in parkinson's disease? As the disease progresses some food related difficulties appear. These are: 1. Difficulty in food preparation
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