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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
What are the structures that participate in the human auditory sensitivity? The structures of the human auditory sensitivity are the ears (external, middle and internal), the
Procedure for testing Presence of Vanaspati and Rancidity in Ghee? Carry out the steps enumerated herewith for conducting this exercise. For Vanaspati Checking: 1. Take 5
Copper Copper is an essential trace element required for enzyme systems, iron metabolism, connective tissue metabolism, integrity of the central nervous and immune systems. Co
Protection of Plants against Toxic Substances Plants produce several toxic substances themselves and may also encounter the ones produced by other plants or present in the env
Q. What is the association between sunrays and vitamin D? Vitamin D or calciferol is synthesized in the skin by the action of the ultraviolet range of sunrays upon precursor mo
What does an anther have on it? The anther is the part of the flower that keeps the pollen. This and the filament both make up the stamen.
State the list of Behavioural Observations A typical list of domains would include the following: Mood and affect Motivation and cooperation Social interaction
what does ICZN stand for
1. Many bacterial genes show adaptive regulation of their transcription. a) How is the lac operon regulated by the sigma factor? b) How is the lac operon regulated by lactose
R e troviral method: A retrovirus is a virus that carries its genetic material in the form of RNA rather than DNA. In this method retroviruses are used as vectors to transf
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