4) In the pea- the smooth-seeded character is dominant over the wrinkl.docx

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4) In the pea, the smooth-seeded character is dominant over the wrinkled-seeded character. What will the offspring of a pea be like? Crossing between pure breeds of plants with tall stems and smooth seeds with plants with dwarf stems and wrinkled seeds? what will be the genotype and phenotype of the plants that result from the fertilization of the offspring of the previous cross? T = tall stem, t = dwarf stem, A = smooth seed and a = wrinkled seed .

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4. Determine the type of sampling in the following: a. A study was conducted at a university in Cairo, Egypt, to determine the relationship between road risk perception and pedestrian injurics. The sample was taken from the list of student IDs. Every 40 th student was selected, after starting with a randomly chosen number. What sampling scheme was used? (Source: JM Ibrahim JM (2011) Road risk-perception and pedestrian injuries among students at Ain Shams University, Cairo, Egypt. Journal of Injury and Volence Research (4)2. b. In a study of the health condition of residents of nursing homes, a simple random sample of all nursing homes in the city of Wenzhou was taken. All residents of the randomly selected nursing homes were interviewed. What sampling scheme was employed? (Source: Ireson J and Hallam S (2011) Survey of elderly health condition in Wenzhou city nursing home. Chinese Journal of Gerontology (8).) c. In a study of lung function, a simple random sample was taken from three groups of children: (i) children who live on a farm, (ii) children with intermediate farm exposure, and (iii) children with no farm exposure. Which sampling scheme was used? (Source: Ireson J and Hallam S (2005) Pupil's liking for school. British Journal of Educational Psychology (75).) .

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