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Oogenesis
Oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells. And as in spermatogenesis it involves meiosis to produce haploid ovum. You have learnt in the section on spermatogenesis that the differentiation of sperm occurs after the meiotic events. In oogenesis the process of first meiotic division is very prolonged; and it is during this process that growth and differentiation of oocyte take place. In many animals most events related to oocyte differentiation occur during prophase I of first meiotic division. In animals which produce yolk-laden eggs, this phase is divided into
Insect killing jar Secure a wide-mouth glass jar with a screw top or single which closes very tightly. Place a wad of cotton in the bottom and cover it with a round piece of ca
Which of the below determines the major difference between bryophytes (pron: bry-oh-fites) and tracheophytes (pron: tray-key-o-fites)? a) Tracheophytes can make their own food
ANTIBIOTICS - Chemicals produced by microorganism that inhibit the growth of other microorganism. Such microorganism which produces the antibiotics are antibiont . Wh
To study the gas produced when yeast acts on sugar Place some clear lime water in a test tube and have a pupil exhale by a soda straw placed in the lime-water. Soon the lime-wa
Q. What are the male pronucleus and the female pronucleus? The female pronucleus is the proper haploid nucleus of the egg cell and Male pronucleus is the haploid nucleus of the
State the goals of Neuropsychological assessment Neuropsychological assessment therefore has twin goals. i) The first goal is to recognize the disrupted psychological compo
what is cytoplasm?
Explain the Quebec Colony Counter? It is used for counting the number of colonies in a plate. Culture plate is kept on the screen which is illuminated from beneath. Counting is
Dextran Dextran is a high molecular weight polysaccharide having α1→ 6, α1→ 3 linked glucans. It is produced by the bacterial fermentation of sucrose by Leuconostoc dextran
The calorific value of a fuel can be theoretically determined by using dulong's formula. It is assumed that heat evolved comes from the combustion of carbon, hydrogen, and sulphur
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