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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
In interspecific sterility, the failure in mating occurs because of inability of the sperm to reach the egg in animals and the pollen to reach ovules in plants. In plailts interspe
How sugar play a major role in preservation? In so many products, sugars play a major role in preservation. The addition of monosaccharides, like glucose or fructose, to jams a
Aortic Allograft (Homograft) : In the earlier years fresh antibiotic preserved aortic allografts were tried. As the shelf life is limited, availability of all sizes at all t
An amino acid is amphiprotic (have both acid and base) o Some are polar, non polar, acidic or basic List of amino acids (red are non-polar, yellow are
Water Adaptations After becoming familiar with the two kinds of water stresses you would like to know about the adaptations in plants and animals which enable them to survive u
In patients with coronary artery disease an acute coronary syndrome event can precipitate heart failure. Mitral regurgitation occurring as a result of papillary muscle ischemia con
S-Adenosyl methionine serve as a donor of methyl sets in numerous biological reactions instance for in the formation of creatine phosphate and in the synthesis of nuc
Pyruvate Dehydrogenase Complex The Pyruvate Dehydrogenase Complex (PDC) is one of the single central enzymes of aerobic metabolism. After completion of this animation you shoul
What are the two main morphological patterns of cnidarians? Concerning locomotion how do these forms differentiate from each other? Morphologically, cnidarians categorize as po
Manx cats are heterozygous for a dominant mutation that results in no tails or very short tails, large hind legs and a distinctive gait. The mating of two Manx cats yields two Manx
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