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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
advantages of spread plate method over pour plate method
ADP-ATP system of energy exchange : In 1929 Lohmann, Fiske and subbarow published their discovery that the energy exchanges compounds in all biological systems are t
What was Lamarck's explanation for the succession of fossils in a given location? ps: I want to the idea for the succession of fossils, not the whole difference between Darwin and
Your task is to describe genetic algorithms, explain why genetic algorithms are useful in solving the problem you have been set and conduct an investigation into the optimum parame
Limitations of Five-Kingdom Classification As already pointed out, each system of classification has its own limitations. The two-kingdom system has outlived its usefulness as
Which of the following statements is correct? A. Hemoglobin binds O2 cooperatively, while myoglobin does not. B. Myoglobin binds O2 cooperatively, while hemoglobin does not.
Explain Environmental Sampling - Methods and Techniques? Environmental sampling can be done for total microbial load or for some specific pathogens or spoilage organisms. The m
Q. What are the three types of germ layers that form tissues and organs in animals? The three germ layers are the mesoderm, the ectoderm and the endoderm.
what is the classification of vertibrates
What is an operon, and in what type of organism are operons found? An operon is a series of genes that code for exact products and the regulatory elements that control those ge
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