Essay on Sordaria Lab Report - 2280 Words

Meiosis and Genetic Diversity in Sordaria 979554296 Biology 110 Lab Introduction: In Israel there exists multiple spots in the mountains called Evolution Canyons, which are all located between a southern facing slope (SFS) and a northern facing slope (NFS). What’s particularly interesting about these locations is that despite the two slopes being on opposite sides of a small canyon, they exhibit extremely contrasting conditions. The SFS receives multiple times the UV radiation from the sun that the NFS receives, has fluctuating weather, and is generally an arid and less hospitable region compared to the temperate, stable environment of the NFS. Scientists collected wild type Sordaria fimicola inhabiting both slopes and discovered†¦show more content†¦There should be an observable line of black dots, the mature perithecia, growing along the dividing lines that separate the four quadrants. Next, open the plate and using an inoculating loop, scrape some of the perithecia from the middle of one of the four dividing lines before depositing the sample onto a microscope slide. Use a squirt bottle of water to place a drop of water on top of the sample before covering it with a cover slip. Using a pencil eraser or your finger, apply slight pressure to the sample to release the asci from the perithecia without releasing the individual spores and slide around the cover slip to spread out the asci. Place the slide under a compound light microscope and observe the sample at 100X magnification in order to find the asci, before increasing the magnification to 400X for a clearer view. to Draw a sketch of the perithecium squash and asci in the results section. The final step of the experiment involves scoring (counting) ~10 clearly visible asci and recording how many of each of the three possible patterns of asci (4:4 (no recombination), 2:4:2, 2:2:2:2 (crossing over did occur)) there were in Table 1 of the results section. Following scoring one’s individual sample, clean up the inoculating loop, microscope slide, and co ver slip, and put away the microscope. Collaborate with another person or group and combine individual data inShow MoreRelatedSordaria Fimicola Lab Report2063 Words   |  7 Pagesï » ¿Nicole Hain Bio 110 Sordaria fimicola Lab Report Introduction â€Å"Evolution Canyon† consists of two slopes in Israel that are close in proximity, but have a huge difference in environment. This makes the slopes a good model system for exploring evolution, especially because they’re so close to one another. The South Facing Side (SFS) receives more sunlight than the North Facing Side (NFS). This extreme sun exposure causes the South slope to have drought and arid conditions whereas the North side hasRead MoreSordaria Finicola Lab Report1890 Words   |  8 PagesGenetic Variation in Sordaria Finicola Introduction: The purpose of the Sordaria Lab was to explore the affects of genetic variation caused by meiosis and to record how sexual reproduction] affects the amount of crossing over in certain strains of Sordaria Fimicola. These organisms are ascomycetes and are also known as sac fungi. This is because the shape of their asci is in the form of a sac; inside each sac there are structures called ascospores. It is these structures, ascospores, where genetic