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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.
SIMILARITIE S BETWEEN CARDIAC AND SKELETAL MUSCLES - Both cardiac and skeletal muscles are made up of elongated fibres which have numerous myofibrils. The myofibrils of
How does the formation of the enzyme-substrate complex define the reduction of the activation energy of chemical reactions? The enzyme possibly works as a test tube within whic
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A transport process in which physical (hydrostatic) pressure drives part of a fluid through a membrane that selects based on pore size
Define the Surgery Process for Cancer Patient? Surgery is generally conducted in the absence of metastasis i.e. when a tumor is localized. Nutrition support would vary dependin
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