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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.
From where does the cell get oxaloacetic acid for krebs citric acid cycle? Oxaloacetic acid is also formed when pyruvate is acted upon by pyruvate carboxylase in response to an
Please explain the differences between an integral membrane protein, a Davison-Danielli peripheral membrane protein, and a protein in which alpha-helices would not be found.
What is the response to enhance in the length of the right knee extensors in response to a quick tap applied to the right patellar tendon? An increase in the amount of A. o
The bonding geometry of C,O,N is determined by- Select one: a. The number of electrons in their outer energy level b. SP3 hybridization of orbitals in the valence shell
how does respiration takes place in animals ?
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Periodic Variations in Light-Diurnal and Seasonal We know that rotation of the earth on its axis accounts for day-to-night variations in the amount of radiations falling at a g
There is a lot of dataset and hypothese that attempt to explain why there was a Cambrian Explosion. Using all supporting ideas, explain and write a paragraph on why all this specia
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 How Yersinia enterol
When a piece of thread is tied tightly around an animal pancreatic duct the animal experiences difficult in digestion but does not suffer from diabetes mellitus.Explain why?
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