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Mosaic Endosperm - Variants of Endosperm
In some plants patches of two different colors appear in the tissues of the endosperm providing a mosaic design. In maize, red and white patches of tissues are sometimes seen in the grain. The occurrence of such endosperm has also been reported in Petunia, Lycopersicon and Acorus etc.
Several theories have been advanced to explain the development of mosaic endosperm but none of these has been cytologically demonstrated. The most appealing explanation for the development of such endosperm is said to be the aberrant behavior of the chromosomes during mitosis or somatic mutations.
Why is it necessary to have the second division in meiosis even though cells have already been reduced to haploid number after the first division?
At 1 AM, a researcher places a healthy squid giant axon in a bath of normal squid physiological extracellular saline and internally perfuses the axon with normal squid intracellula
Explain about the Simple Proteins? Simple proteins are those that are made of amino acid units just joined by peptide bond. Upon hydrolysis they yield a mixture of amino acids
Causes of Cancer We know earlier that a malignant tumor is a large aggregation of cancer cells, all of them descended from a single founder cell that was once a normal cell wi
Describe a. the factors responsible for promoting lactation, and b. the mechanism responsible for the cessation of lactation when a mother weans her baby.
what year was homo erectus fossils found
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Q. Generally how does a male animal realize that the female is receptive to copulation? In most vertebrate species with internal fecundation the females have reproductive cycle
Explain about Cyanocobalamin Cyanocobalamin occurs as dark red crystals or as a crystalline hygroscopic powder of the same colour without odour and taste. Upon standing in the
Define Absorption, Storage and Elimination of vitamins? Reading through this section you would realize that all fat-soluble vitamins undergo similar metabolic fate. They are a
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