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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
Blood Pressure Blood pressure may be defined as the force or pressure which the blood exerts on the walls of the artery. Blood pressure varies with the age of the individual. B
Contagious ecthyma The contagious ecthyma virus is immunologically distinct from vaccinia, but similar to the causative agent of pseudo-cow-pox. It belongs to the genus Parapoxvi
Give three examples of abiotic factors and explain how they interact. Abiotic factors contain temperature, humidity, pH, salinity, O 2 concentration, amount of sunlight, avail
porifera
What are the morphological similarities and differences among nematodes and annelids? Nematodes, like annelids, have a cylindrical elongated body. Annelids differentiate from
Q. What is folic acid? Why is the anemia caused by deficiency of folic acid known as megaloblastic anemia? The folic acid when ionized it is called folate is a coenzyme that pa
Explain Nutritional assessment and Guidance in Prenatal Care? In the preceding sections, we have seen that there are unique physiologic changes in the pregnant woman's body, wh
Explain the Steps of Exercise You have learnt the steps of exercises in Block 3, Unit 1 of theory block. Let us review the steps. In aerobic exercises one has to under go fo
DETERMIN A TIO N OF THE AGE OF FOSSIL - Radioactive clock (Boltwood -1907) - Half life of uranium is 4.5 billion years. This means half of total uranium disintegrates
Aspergillosis Aspergillosis is the most common chronic, granulomatous, necrotizing and cavitary disease of lungs, and is characterized by formation of white yellowish caseous
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