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Principles Governing Cleavage
a) The nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing cells, e.g., in isolecithal eggs or microlecithal eggs, the spindle is formed centrally in the cell while in the telolecithal eggs, and it is formed nearer the animal pole.
b) Each new cleavage furrow tends to intersect the plane of the preceding cleavage furrow at right angle.
c) The cells or blastomeres tend to divide into two equal sized daughter cells unless yolk is unevenly distributed.
d) Free sides of the blastomeres tend to become rounded.
Illustrate the tear flow direction of drainage. Tear Drainage: Tear are drained by the combined action of gravity, capillary action and lid movements (Lacrimal pump)
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 Spermatogonia - Spe
#questitypes of plant breeding on..
An interesting observation made by an American biologist H.C. Bumpus (1899) provides a good explanation for normalising selection. Bumpus collected some 136 injured house sparrows
Energy from water or hydropower Hydroelectricity is the energy produce from the kinetic energy of water falling from height. Approximately 25% of world electricity
he Lac Repressor protein, which we will talk about a bit later in the course, is important for controlling expression of a number of genes in E. coli. There are about 10 copies of
Explain National Nutritional Anaemia Prophylaxis Programme? National Nutritional Anaemia Prophylaxis Programme addresses iron and folate deficiency anaemia (IDA). Preschoolers
what are fats
Q. Rhythm and conduction disturbances? Alterations in cardiac rhythm occur frequently with exercise and are important in understanding a patients function and in providing pred
Ecological adaptation in animals to aquatic environment In the aquatic environment animals are confronted with the problem of excess water. Freshwater and marine animals try to
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