Biology, 27.09.2019 15:30 DragonLovely
Natural selection is such a powerful force in evolution because cells with even a small proliferation advantage quickly outgrow their competitors. to illustrate this process, consider a cell culture that contains 1 million bacterial cells that double every 20 minutes. a single cell in this culture acquires a mutation that allows it to divide faster, with a generation time of only 15 minutes. assuming that there is an unlimited food supply and no cell death, how long would it take before the progeny of the mutated cellbecam predominant in the culture? (before you go through the calculation ,make a guess: do you think it would take about a day, a week, a month, or a year ? ) how many cells of either type are present in the culture at this time? ( the number of cells n in the culture at time t is dedcribed by the equation n=nox2t\g, where no is the number of cells at zero time and g is thr generation time.)[20]
Answers: 1
Biology, 22.06.2019 08:00, cailinhannon4828
Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4
Answers: 2
Natural selection is such a powerful force in evolution because cells with even a small proliferatio...
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