Tutor profile: Sahar F.
Subject: Study Skills
Imagine you just started class and the professor announces the exam will be in 3 weeks. You know that in the 3 weeks leading up to the exam you have work, running errands, soccer practice, and other classes to study for. What are the most effective steps to take in preparing for the exam.
To organize your study time as effectively as possible, plan ahead. Prioritize your tasks and chose which tasks are most important and should be done first. Finish small tasks first and divide complex tasks into smaller tasks like maybe a project that is coming up in another course. Work backwards from the exam date and make a plan to have everything done at least 2 days before the exam, so you have time to do more comprehensive review and get a good nights rest before the exam.
In a certain species of bird, the diploid number of chromosomes is 4 (2n=4). Feather color is controlled by a single gene in which the yellow allele (B) is dominant to the blue allege (b). Beak length is controlled by a different gene in which the short allele (D) is dominant to the long allege (d). Individuals of the parental (P) generation with the genotypes BBDD and bbdd were crossed to produce F1 progeny. If the two genes were genetically linked, describe how the proportions of phenotypes of the resulting offspring would most likely differ from those of the test cross between an F1 individual and a bbdd individual.
If their genes were linked there would be many more yellow short beaked and blue long beaked birds in the resulting offspring of F1 x bbdd, and the phenotype ration wouldn't be 1:1:1:1, it would have 2 phenotypes at a larger proportion to the other 2.
To edit a book, Kyle charges $30 for the first 3 hours and $20 per hour after the first 3 hours. Which of the following expresses the amount, D, in dollars, Kyle charges if it takes him x hours to edit a book, where x > 3?
The question defines the variables D and x and asks you to express D in terms of x. To create the correct equation, you must note that since the $30 that Miguel charges pays for his first 3 hours of editing, he charges $20 per hour only after the first 3 hours. Thus, if it takes x hours for Kyle to edit a book, he charges $30 for the first 3 hours and $20 per hour for the remaining time, which is x − 3 hours. Thus, his total charge, D, in dollars, can be written as D = 30 + 20(x − 3), where x > 3. This can also be further simplified to D=30 + 20x - 60 which comes to D= 20x - 30.
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