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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.
Can mitosis occur in haploid (n) cells? And in triploid cells? The mitotic cell division can happen in haploid (n) cells, diploid (2n) cells, triploid (3n) cells, etc. Mitosis
DNA fingerprinting produces a unique banding pattern of DNA fragments for comparison with other DNA samples.
what is the mode of nutrition in tape worm
How do you explain in the absence of aldehyde group in the pentaacetate of D-glucose? Ans) when you react glucose with acetic anhydrate it forms pentaacetate with 5 OH grops it tel
Q. Why is it difficult to produce efficient vaccines against a viral infection like dengue and AIDS? It is difficult to make vaccines for dengue because there are four differen
What is the Industrial Melanism in evolution? A classic example of Darwin's theory at work in an actual real-life situation lies in the case of the peppered moth during the ind
Q. What are the major parts of the human ear? The human ear is divided into three major parts: the external ear, the internal ear and the middle ear.
Role of Hormones in Aging Aging as well reflects the inefficiency of the endocrine system. A change in the hormonal secretions may contribute to the development of physical ai
in human and mammals how many cells result from oogenesis
Each ribosome having of two subunits a small subunit and a large subunit, every of that is a multi component complex of rRNAs (ribosomal RNAs) and ribosomal proteins t
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