Essay on Plant Genetics Labpaq

679 WordsMar 1, 20133 Pages
Plant Genetics JANICE NALBONE Abstract This experiment is being done to show Mendel’s rule of dominance that says certain alleles are dominant and others are recessive. To show this, we are using tobacco seeds, a monohybrid cross comparing only one trait color. We are also showing Mendel’s law of segregation with a Dihybrid cross comparing two traits of color and texture. Introduction Three purposes: 1. To predict the genetic frequency off offspring. 2. To predict the outcomes of genetic crosses using punnett squares. 3. Statistically analyze the results of a genetic cross. Hypothesis: 1. Monohybrid cross—Predict that 75%…show more content…
Results as follows: Data Table 4: Corn kernel data. | | Number of Kernels | Kernel Percentage(Divide count by total, thenmultiply by 100) | Kernel Coloration | | | Purple | 152 | 71.7% | Yellow | 60 | 28.3% | Total | 212 | 100% | | Kernel Texture | | | Smooth | 178 | 84.4% | Wrinkled | 33 | 15.6% | Total | 211 | 100% | Data Table 5: Punnet square for dihybrid cross. Parent Gametes PS Ps pS ps Parent PS PPSS PPSs PpSS PsSs Gametes Ps PPSs PPss PpSs Ppss pS PpSS PpSs ppSS ppSs ps PpSs Ppss ppSs ppss 9 different genotypes in the table. PPSS(1) PPSs(2) PpSS(2) PpSs(4) PPss(1) Ppss(2) ppSS(1) ppSs(2) ppss(1) Number of phenotypes =4 Number of genotypes =9 Data Table 6: Data from corn kernels. | | Number Counted | Ratio: Number counted /total | Purple and smooth | 112 | 53% | Purple and wrinkled | 40 | 19% | Yellow and smooth | 40 | 19% | Yellow and wrinkled | 20 | 9% | TOTAL | 212 | 100% | Exercise 1: Observing a Monohybrid Cross Questions A. What are the predicted ratios of

More about Essay on Plant Genetics Labpaq

Open Document