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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
The genotype of individual is EeFfGgHh, while hte genotype of individual #2 is EeFfggHH. A cross is performed between individual 1 and 2. What is the propability of producing the f
Q. What are the main degenerative diseases of the heart? The major degenerative diseases of the heart are heart failure, arrhythmias, valvular heart diseases, coronary insuffic
Q. Which is the first (human) heart chamber into which blood enters? Where does the blood go after passing that chamber? What is the name of the valve that separates the compartmen
One can verify the age of an oak tree by counting the annual rings of formed by the. a. primary xylem, apical meristem b. secondary phloem, vascular cambium c. dermal
Proteins destined to be secreted from the eukaryotic cell are synthesized by ribosomes bound to the RER (rough endoplasmic reticulum). As the protein is synthesized it is transloca
What is root cap? Root cap is a protective structure located in the tip of the growing root. It defends the meristematic tissue of the root forming a cap that surrounds the tip
Define Causes of iron Deficiency Anaemia? Anaemia is a condition in which the blood cannot carry enough oxygen. This may be because there are fewer red blood cells than normal,
Acellular and Cellular Organisms you should be able to characterise living and non- living matter. However, the boundary-line between the two is not very precise. As you have
Lung Biopsy: As with pleural biopsy, lung biopsy may be done by surgical exposure of the lung (open lung biopsy) with or without endoscopy using a needle designed to remove a
Method for fractionation of subcellular organelles In order to study the composition and the metabolic role of the various subcellular organelles in a cell, it becomes necessar
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