Post-Lab Report Variation and selection in a population of wood lice Lab

Post- Variation and selection in a population of wood lice -rollie pollie - Lab Report Example rve how the natural selection acts upon variation in a population, this experimental set up entails documenting variations among several traits of wood lice and determining how and whether certain traits confer some survival advantage when subjected to simulated foragers. It also entails testing whether such survival advantages are depended on the forager used. In this case, the traits which included animal length, sprint speed, the number of dorsal plates, and the animal mass for multiple individuals of the isopods population were measured. Measures of central tendency (Means, and range), measures of dispersion (standard deviations, and variance) as well a t-test was conducted to ascertain this connotation. The total number of isopods was 50. This was divided into two portions victims and survivors (Tables 1 and 2). The length, sprint speed, number of dorsal plates and weight of placed measured are also shown on tables 1 and 2. Additionally, the measures of central tendency (mean) and measures of dispersion variance) and the t-test value between the victims (variable 1) and the survivors (variable 2) were calculated. Tables3, 4, 5, and 6 shows the measures of central tendency, measures of dispersion, and the t-test value between the victims and survivors. Tables 3, 4, 5, and 6 clearly indicate that at a significant level of 0.05, in each case, using a 1-tailed, Tstat= 1.165103 and T critical = 1.681952, it is apparent that Tstat 0.05. This indicates that the null hypothesis that variations in traits of an isopod do not confer a survival advantage in presence of simulated foragers is accepted. Therefore, it is with 95% confidence that variations in traits of an isopod do not confer survival advantage in the presence of simulated foragers. As for the case of the length, from the tabulated value for df ÃŽ ½ = 48, in each case, using a 1-tailed, the 95% confidence level, tstat = 6.408633 and T critical = 1.677224. It is clear that

Research and argument Paper Example | Topics and Well Written Essays - 1250 words - 1

And argument - Research Paper Example This harassment of the LGBT community extends to higher learning institutions like universities and colleges. Students belonging to this community face verbal and physical violence from fellow students thus making their academic environment horrible (Andreatta 197). The society sees this community as immoral and their security becomes an issue. LLC, living learning community, intends to support this community by introducing housing that recognizes unity among the LGBT members. It aims at bringing together this community and helps them achieve recognition from the society. It also aims at providing them with a safer environment where they can interact, share, and understand their surroundings better. LLC believes that the housing issue will succeed. They hope to make housing arrangements where students of the same identity will stay together regardless of their gender. This will only be successful if students put their efforts in implementing the idea. This housing idea has led to man y arguments for and against the emerging model of LGBT housing on U.S. campuses. There are groups supporting the idea but others who are against it. LGBT housing is a good idea because it recognizes the LGBT community. The housing idea will bring together the LGBT community and promote their self-esteem. The community members have low self-esteem because the society seems not to accept them thus humiliating them and their feelings. When they are staying together, they are able to share some challenges they face and work on the solutions to that. Sharing of their experiences in campus and the society will strengthen their togetherness and behavior. They will be able to fight for their rights in the campus and spread the same spirit to other members in the society. LGBT community is real and it is growing at a high rate in US and in the world. If the members do not raise their voices and fight for