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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
DIFFERENCE S BETWEEN MEDULLATED AND NON-MEDULLATED NERVE FIBRES 1. Medullated (Myelinated) Nerve Fibres Medullary sheath is present.
Define Surgery Process for Head and Neck Tumor? Treatment mostly involves combination of surgery and radiation. Chemotherapy is also used in some cases, we will learn about the
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Discuss in brief about the Headaches Headache is so common among the general population that rare indeed is the person who has never suffered one. Headache may constitute a neu
There are several different lipoprotein species found in plasma but their basic structures are similar. The insoluble lipid (cholesterol ester and triglyceride) forms a central cor
Which of the following is true for a motor cortex corticospinal interneuron A that produces action potentials during movements of the big toe of the right foot in right-handed Pati
Q. What is ST Depression with Long Diastolic Filling? For the person with a slow heart rate and a long period of a diastole after a premature ventricular contraction, the next
Types of Parthenocarpy Three types of Parthenocarpy are generally recognized: Genetical Environmental, Chemically-induced. Genetical Parthe
Q. What are the three major types of RNA? What is meant by heterogeneous RNA? Messenger RNA, or mRNA, transfer RNA, or tRNA, and ribosomal RNA, or rRNA, are the three main type
Define Genetic Susceptibility Factors for Obesity? Some people inherit a tendency to become fat. Earlier, it was thought that genetic inheritance ranged from 66% to 80% but now
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