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Anaphase
This phase is of shortest duration. It begins with a sudden separation of the two chromatids of each due to splitting of its centromere and then a slow movement of separted chromatids towards opposite poles of mitotic spindle . Factors responsible for splitting of centromeres and movement of attachment fibres, or the fibres gradually shorten, pulling the chromatids towards the poles. Shortening of these fibres may be due to their contraction (due to the presence of contractile actin proteinin these ) or their gradual depolymeriaztion at polar ends Simultaneously, however the continuous spindle fibres somewhat elongate, pushing the spindle poles more apart. Towards the end of anaphase when polar migration of chromatids is complete , these is a full chromosomal complement at each pole identical to the original karyotype of parent cell. Soon, a nuclear envelope forms around each polar group, presumably from the endoplasmic reticulum.
Explain the Nutritional Factors that affecting food choice? Food choices made based on sound principles of nutrition will be conducive to good health while carelessness about n
Describe two differences among green algae and plants. Algae lack tissue differentiation and have no true roots, leaves and stems. The gametangia of algae are single-celled; th
ROL E OF PROTEIN - Main organic component of body. Unit is amino acid. Polymer of amino acids. Amino acids combine to each other by peptide bond. Formation of bone, t
1 ." Most of the genome does not code for protein, therefore 99% of the human genome is junk that serves no purpose". With specific reference to examples long and short non-coding
INTRODUCTIO N - Karl Von Baer - Coined the term cleavage. Swammerdom - First time seen cleavage. Prevost and Dumas - Reported cleavage of frog's egg. Spllanzani - Detail
Mr. Jones I.V. was hung at noon. It is a liter bag and is infusing at 65 ml/hr. How many hours will this bag last?
Signal transduction occurs when an extracellular signaling molecule activates a cell surface receptor. In words, this receptor change intracellular molecules changes a response. Th
DEALCOHOLISM - Treatment of alcoholism or withdrawal symptoms of alcohol is known as dealcoholism. Recovery from alcohol dependence is greatly aided by sociobehavioural c
The blood vessels surrounding an acutely inflamed site usually represent progressive vasodilatation from the time of injury.
advantages and disadvantages of protozoa
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