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Natural selection is such a powerful force in evolution because cells with even a small growth advantage quickly outgrow their competitors. To illustrate this process, consider a bacterial culture that contains 106 (1,000,000) cells that double every 64 min. One cell acquires a mutation that enable it and its progeny to divide with a generation time of only 30 min. Assuming there is nothing to limit the growth of the culture (e.g. unlimited food supply) and no cell death, how long should it take for the mutant cells to overtake the culture? Give your rounded answers in minutes (min). The number of cells N in the culture at time t is given by N=N02t/G where N0 is the number of cells at time zero and G is the generation
List out the endothermic and exothermic reactions taking place in our body
What type of compound is the major metabolic waste of Porifera? Why is it important for the organism to get rid of this compound?
What was the experiment of Stanley Miller (1953) on the origin of life? In 1953 the Stanley Miller arranged an experimental apparatus that simulated the atmospheric conditions
What is the Use of Uristix There are some enzymatic products and reagents impregnated on paper or plastic strips and dipping them in urine provide the results in less time comp
What is the difference between haploid and diploid? why are so many anesthesias fat solvents Why is it important for core body temperature to stay more constant than skin tem
what is mean by autotrophic ?
Aquatic Ecosystem - Types of Ecosystem Global waters cover about three quarters of the earth's surface either as fresh water where salt content is less than 0.5 per cent or as
Describe the structure of pectin Its structure is presented in the figures (a) and (b). Pectin is a polygalacturonic acid ester along with rhamnose, arabinose and galactose.
Agarose gel electrophoresis is the method to analyze the size of the DNA (or RNA) fragments. In the presence of an electric field, bigger fragments of DNA move through a gel slowe
Explain why the chance of fertilisation in humans is restricted to only a few days each month. Sperms can fertilise an ovum for up to about three days after entering the female
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