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Mutations are the only kind of variability generating mechanism in prokaryotes and asexually reproducing organisms. But in eukaryotes where sexual recombination occurs, even in one generation there is a marked reshuffling of genes in the chromosomes which amplifies the genetic variability in a population. The kind of variability generated by recombination is tested by natural selection in as many genetic backgrounds as possible and in as short time as possible (say in one generation). Thus one of the greatest and fundamental advantages of sexual reproduction is the generation of variability. Provided the populations are large, even if mutations do not exist, the mechanism of sexual recombination alone would be generating new genotypes for very long time.
Explain Oedema - Clinical Signs of Kwashiorkor? Oedema: Oedema refers to accumulation of fluid in the tissues and usually begins with a slight swelling in feet gradually spread
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State the basic properties of Cell The differences of cell types notwithstanding, the similarities among them are more profound. Actually, all cells possess the same basic prop
Venipuncture : patient should be seated or supine for at least 20 minutes before sampling. An arm with an inserted intravenous line should be avoided. The median cubi
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What might be the value of the Everglade restoration plan? Everglades will protect endangered species, such as the Florida panther, and restore the water flow needed by many or
What is Sports Nutrition? Sports nutrition is a discipline which applies principles derived not only from nutritional but also biochemical and physiological scientific knowled
Special type of Wards: Additional accommodation or differences in size and shape of some of the special type of wards e.g. Intensive Care Ward, Infectious diseases ward and
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