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BMZ Lab Report C-Fern Final

BMZ Lab Report C-Fern Final - 1 Farley Fernsmart Module BMZ...

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1 Farley Fernsmart Module BMZ Lab Section BA Lenna Odstrodka 28 November 2011 My Ferntastic Lab Report
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2 Hypothesis: The hypothesis tested was that the “M” strain of spores could not send a signal for growth when in the petri dish. Methods: First, possible hypotheses were developed to test, and a final hypothesis that the “M” strain of spores could not send a signal for growth when in the petri dish, was chosen as the final hypothesis. The materials were then collected, being seven culture plates of “W” strain gametophytes, two culture plates of “M” gametophytes, two “M” strain filtrate plates at differing dilutions of 1:1 and 1:27, two “WT” strain filtrate plates at the same differing dilution as the “M” filtrate, distilled water, and a pipette with disposable tips. The experiment was then designed with a final hypothesis, experimental control, and manipulated, positive, and negative controls. The experiment was then set up, with varying filtrates being combined with varying spores in petri plates to test the hypothesis. “M” filtrate was combined with “W” spores as the experimental control, water was put with “W” spores as a manipulated variable, “W” filtrate was put with “W” spores as a positive control, and finally “M” filtrate was put with “M” spores as a negative control. Then, Table 6-4 in the workbook was filled out with the information given above. After a week had passed, the second part of the procedure began with the petri plates being retrieved from the instructor and the data collected regarding the growth of spores and the shapes they took. These results were then graphed, and the initial hypothesis that the “M” strain of spores could not send a signal for growth when in the petri dish, was rejected. A summary of the data was then made with the results taken into account, and conclusions were drawn regarding the spores and the lab itself.
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3 Farley Results: The results for this lab were both interesting and surprising when compared to what was originally thought to happen. In terms of our group experiment, the percentage of the light-bulb shaped spores was the focus. For the experimental petri plate, which
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