Sordaria Essay

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The basis for this experiment was inspired by the evolution canyon in Israel that contained various species of Sordaria Fimicola (S. Fimicola) and more importantly had a tight ecological barrier. The canyon has two slopes that experience vastly different environmental conditions and thus expose organisms who inhabit them with bipolar pressures. Organisms living on the South Facing Slope (SFS) experience higher and more intense amounts of solar radiation, temperature, and drought. While Sordaria who inhabit the North Facing Slope (NFS) receive more cool and humid conditions. Sampled Sordaria from the two slope showed variances in cross-over frequency that occurs during Prophase I of Meiosis. This promising fact lead to the investigation of UV radiation of different types of Sordaria discussed later and promotes the idea that harsh environmental condition, like those experienced on the SFS, can cause variances in cross-over frequency. (Burpee et al., 2017)…show more content…
The wild type (WT) and most common color is black, while the mutant type (T) is a lighter tan spore. Each spore must be carefully analyzed along a chain of eight to accurately determine if cross-over played a role in the creation of the ascus. Three different forms of ascus are possible through sexual reproduction of separate hyphae. The different forms are caused by chromosomal cross-over when homologous pairs attach during Prophase I of meiosis. An ascus showing a 4:4 ration of WT to T spores represents an ascus that did not undergo any cross-over. There are two different patterns of cross-over found in Sordaria with the ratios of 2:2:2:2 and 2:4:2 (WT to T spores or vice versa). The different ratios are determined by which sister chromatid that genetic information was crossed over, the ends of the chromosomes being the most
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