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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.
Functional properties of food lipids Chemically, fats and oils, as you may already know by now, are a combination of glycerol and fatty acids. The glycerol molecule has three s
explain industrial melanism and genetic repatterning during isolation with example
Given four respiratory capacities (a - d) and four jumbled respiratory volumes of a normal human adult: Respiratory Respiratory capacities volumes. 1. Residual vol
The cytoskeleton is a network of very little tubules and filaments spread throughout the cytoplasm of eukaryotic cells. It is made of microtubules, microfilaments and intermediate
What is Choanoflagellate? Explain in brief. The protozoans which resemble the choanocyte cells found in sponges. They have a collar of microvilli which surround a central flage
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Helix-turn-helix This motif have of two -helices divided by a short (four-amino acid) peptide sequence which forms a -turn that shown in above figure. When
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