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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
What do you understand by Mesocoel? The middle of three coelomic spaces found in tripartate body plan characteristic of deuterostome lineage of animals. Other coelomic compartm
Explain Total Anomalous pulmonary Venous Connection (TAPVC) ? In this congenital anomaly there is no direct communication between the pulmonary veins and the left atrium. All
Exchange of oxygen, nutrients, carbon dioxide and waste products from mother to fetus takes place through diffusion across the: a) Chorionic villi (pron: core-e-on-ick villi)
Q. Of which type of defense cell do viral infections stimulate the multiplication? The main leukocytes that generally participate and multiply in the defense against viral infe
Determine the genotypes and phenotypes of the F1 generaiton from a colour blind father and a mother who is homozygous for normal colour vision
what are the disadvantages of protozoa
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Weight of Plants - Quantitative Characters Weight is one of the most important quantitative characteristics of plants. Quantitatively growth is best measured on the basis of d
Q. What do you mean by Hypertension? Hypertension is one of the major risk factors for cardiovascular disease. It is the most common public health problem and often referred to
components of human skeleton
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