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Reproductive Mechanisms
Organisms reproduce in two different ways,
In asexual reproduction there is only one parent and there are no special reproductive organs or cells. Each organism is capable of producing genetically identical copies of itself as soon as it becomes an adult. Sexual reproduction involves two parents, each of which contributes special sex cells, or gametes. These gametes fuse to form a zygote. Since the zygote receives genetic material, the offspring bear the characteristics of the species, but also bear traits that make them different from their parents. In the following sections you shall study about these reproductive mechanisms.
Fusion of Sperm and the Egg After the penetration of the extracellular layers by sperm there occurs the fusion of the - sperm plasma membrane with that of the egg. In mammals
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(a) Trace the succession of plants on a dry bare rock. (b) How does phosphorus cycle vary from carbon cycle?
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What is Risk Risk : A function of the probability of an adverse effect and the magnitude of that effect, consequential to hazard(s) in food.
Prevention and control The organism is sensitive to penicillin, tetracycline and other broad-spectrum antibiotics. Newer generation drugs are being used for the treatment of affec
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