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A species of bent grass has a gene that controls whether it is tolerant of (or susceptible to) copper poisoning The more copper that is present in soil, the greater the survival and reproductive advantage tolerant plants have over susceptible plants, When copper levels are particularly high, susceptible plants die as seedlings before reaching reproductive maturity. In contrast, where soil- copper levels are normal, susceptible plants grow and reproduce much better than copper- tolerant plants. Bent-grass reproduction does not rely on animals, as its pollen and seeds are both carried by wind. The tolerant phenotype is inherited in a completely dominant fashion over the susceptible phenotype. In an abandoned copper-mine sile, a sample of 100 mature bent-grass individuals was taken to a genetics lab, and the genotypes for copper tolerance were identified: 55 homozygous tolerant and 45 heterozygous. Is there evidence for evolution of the copper- tolerance gene in this population of bent grass at the abandoned mine site? If so, what might be causing the evolution? Is there evidence for more than one evolutionary mechanism acting?.

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A species of butterfly has three colour types and colour is determined.pdf

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A software process is a structured set of activities required to develop a software system. There are many different software processes, but all of these processes involve the following activities in the given order (but may be iterative): A)coding and testing, specification, debuging, coding, testing B)design, requirement engineering, testing, coding C)requirement engineering, modelling and design, implementation, testing, and maintenance D)modelling, design, specification, evolution.

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A society can achieve economic growth by implementing policies which w.pdf

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A small open economy produces two goods: machines ( M ) and food ( F ) under CRS. Production of machines requires labour ( L m ) and capital ( K ) , while the production of food requires labour ( L f ) and land ( T ) . All other standard assumptions of the Specific Factors Model are satisfied. (a) Analyse graphically what happens to employment and output in both sectors when the land area in the production of food increases. How will that affect the rewards to all factors of production? (b) Suppose the world price of machines increases. Analyse graphically what happens to employment and output in both sectors and how will that affect the tewards to all factors of production..

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A small medical clinic needs a relational database for its medical practice. As a first step, the clinic has asked youtto develop a data model for the database with the following business rules and requirements: a. Although a patient can make many appointments and a doctor can have many appointments, each appointment is made with only one doctor and one patient at a time. b. An appointment yields a visit with the doctor. c. After each patient visit, an invoice is generated. d. A patient may pay the invoice in one or more payments; each payment is associated with one invoice. First, identify necessary entities, relevant attributes of the entities, and relationships between entities. Then put these together to create an ER diagram. Besides the primary key columns, and foreign key columns (as needed), please be sure that the following attributes are also included in appropriate entities in your ER diagram: Names of doctors and patients along with their phone numbers; appointment date and time; visit date and visit time; date and amount of invoice; date and amount of payment received; and any other necessary attributes. - Include a text box in the diagram in which you should write your full name. - Make sure that all of the attributes in each entity are visible. - Save the completed diagram on your computer (from the menu, select File > Save Model As...) and name the file as your last name. Upload the your-last- name mwb file to Canvas..

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A small college has 500 male and 600 female undergraduates. A simple random sample of 50 of the male undergraduates is selected and, separately, a simple random sample of 60 of the female undergraduates is selected. The two samples are combined to give an overall sample of 110 students. The overall sample is a simple random sample. a stratifi ed random sample. a multistage sample. all of the above..

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A simple random sample with n - 56 provided a sample mean of 24-5 and.pdf

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A Sample of 20 Students taking an Algebra class in the spring. The following is a two-way freqency table of the results. Answer questions as a decimal rounded to 4 decimal places. A single student is chosen from the respondents of the survey above. What is the probability that the student did not pass Algebra or had more that 4 absences? P = What is the probability that the student did not pass Algebra, if that student had more than 4 absence? P =.

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A share of common stock just paid a dividend of $2-20- If the expected.pdf

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A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why? A scientist wants to examine living cells lining the respiratory tract to determine how the cells use tiny hairs to move dirt and mucus away from the lungs. Which of the following instruments would be best, and why? a transmission electron microscope, because it has high resolution a scanning electron microscope, because it can be used to observe whole cells without slicing them a light microscope, because it allows observations of whole, live cells a scanning electron microscope, because it can reveal structures on cell surfaces.

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A sample with a mean of M-4 has DX-44- There are n- scores in the samp.pdf

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A RuBP pathways which synthesize large molecules from smaller ones B Stroma photosynthesis is considered to be this type of reaction because it requires energy from the sun to occur C Light- Dependent Reactions the structure in which chlorophyll is contained the Calvin Cycle takes place in this part of D Light-Independent Reactions the chloroplast ATP and NADPH are the two main products E Anabolic G 3 P is the main product F Calvin Cycle electrons that leave the reaction center of this molecule are replaced by electrons generated by the splitting of H 2 O G Oxygen electrons that leave the reaction center of this molecule are replaced by the electron passed H Thylakoid on from the ETC of PSII the most important by-product of I Chemiosmosis photosynthesis a series of membrane-embedded proteins through which high energy electrons are transferred K. Photosystem II the movement of hydrogen ions down a gradient L. Photosystem I the protein through which hydrogen ions are passed as they enter the stroma M G 3 P three-step cycle that does not require the excitation of electrons to initiate reactions N Electron transport chain molecule used to "fix" carbon dioxide O Endothermic used to make glucose.

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A sample of 300 college students is selected from all students registe.pdf

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A researcher was interested in how different groups perceive psychologists. She asked college students, psychologists, lawyers, and people in the general public how important they thought psychologists were to the current United States society (1 = Not important), 10 = Very important). Use a simple ANOVA to test for differences among the groups and run a Tukey to compare each group. College Students Psychologists Lawyers General Public 4 6 5 4 3 7 6 4 5 5 7 5 3 7 8 5 5 6 4 3 Test selected: Ho: Ha: DF: Critical Value: T-Statistic: Decision: Compare Factors Group Group Sig EMBED Equation.3 Decision Describe Findings College General Psychologists Lawyers Students Public 4 6 5 4 3 7 6 4 5 5 7 5 3 7 8 5 5 6 4 3 .

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A researcher wants to know if excessive social media use causes academic problems. She surveys 1000 high school students and asks them how many hours per day, on average, they use various social media applications. She then matches this information to their high school GPA. She finds a negative correlation with high social media use associated with lower GPAs. Is this a good or bad design for making a causal conclusion, i.e., the conclusion that independent variable causes the dependent variable?.

A researcher wants to know if excessive social media use causes academ.pdf

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