It would be expected that a population geographically located where UV exposure is minimal to have a skin tone that is very light. light. medium. dark. albino (no skin coloration).
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- You will now look at another figure that has to do with skin color. One way to measure skin color is by skin reflectance. Scientists can shine visible light on a portion of skin (typically the inside of the arm) and then measure how much light is reflected back. Dark skin reflects less visible light than does light skin. The lower the reflectance value, therefore, the darker the skin. Figure 2. Relationship between Skin Reflectance and Latitude. This figure shows how skin reflectance changes with latitude. Negative latitudes are south of the equator (located at 0°), and positive latitudes are north of the equator. Available reflectance data from multiple sources were combined to form this graph. All combined data were obtained using a reflectometer with an output of 680 nanometers (i.e., a wavelength of visible light) and placed on the subjects’ upper or lower inner arms. (Source: Panel B of Figure 2 in Barsh(2003). Graph originally captioned as “Summary of 102 skin reflectance…1. List the three main fingerprint patterns and draw the characteristic shape. Name a few of the sub-patterns. 2. What percentage of each fingerprint type are found in the population (i.e. - what percentage of people have whorls vs. loops vs. arches)? 3. True or False-The uniqueness of fingerprints isbased on the general shape or pattern of an individual's finger.We know that lighter skin evolved more than once because the SLC24A5 gene is missing from some populations. Question 17 options: True False
- You are walking to school on a December morning. There is a thin layer of snow on the grass. As you walk, you notice two distinct sets of paw prints left behind by some animals. One set is long and almost triangular shaped with large gaps in between pairs of prints. The other prints are round with four toes and they stagger diagonally. There are tufts of fur near the paw prints, some pieces are reddish orange, and some are a smoky brown color, possibly gray. By the time you get to school, you only see on the set of round paw prints and a few pieces of reddish-orange fur. The other prints stopped appearing suddenly. Based on this scenario, what kind of relationship do you think the two animals have? Mutualistic Commensalistic Predator-Prey AmmenalisticWhat features are created at Divergent boundaries? Draw the picturesNurses performing skin assessments on patients must paycareful attention to cleanliness, color, texture, temperature,turgor, moisture, sensation, vascularity, and lesions. Whichguidelines should nurses follow when performing theseassessments? Select all that apply.a. Compare bilateral parts for symmetry.b. Proceed in a toe-to-head systematic manner.c. Use standard terminology to report and record findings.d. Do not allow data from the nursing history to direct theassessment.e. Document only skin abnormalities on the patient record.f. Perform the appropriate skin assessment when risk factorsare identified.
- Which of the following are not characteristics of FXS? Long, narrow face Big head O Large ears O Large noseWhy people with dark skin have less chances to develop skin cancer than people with lighter skin? (do not include preferred behavior in each group)Which of the following is not a secondary dimension of diversity? a. Educational Background b. Parental Status OC. Marital Status d. Gender
- According to the video “The Biology of Skin Color”, why is lighter skin needed in areas closer to the north and south poles where UV rays are weaker? A. Individuals with a lot of melanin would get too much UV ray penetration in their skin and they wouldn't be able to synthesize vitamin D. B. Lighter skin is not necessary in the north and south poles. C. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin B. D. Individuals with a lot of melanin wouldn't get enough UV ray penetration in their skin to synthesize vitamin D.If 80% of drunk drivers fail to pass a sobriety test (walking a straight line for 5 meters) in 60 seconds, while only 10% of sober drivers fail to pass this sobriety test in 60 seconds, then this test has: a specificity of 90%, and a sensitivity of 80% a specificity of 10%, and a sensitivity of 20% a specificity of 20%, and a sensitivity of 90% a specificity of 10%, and a sensitivity of 80% a specificity of 20%, and a sensitivity of 10%A footwear company wants to test the effectiveness of its new insoles (soft insole and air-fill insole) designed to prevent shin splints resulting from running. They hire a group of physical trainers and a statistician, who recruits 100 healthy adult runners with the same age range to participate in a study. The statistician randomly assigns the 60 runners to follow the se weekly running schedule, wherein 30 runners will use new insoles and the remaining 30 will use the existing insoles the company already sells. After 10 weeks, the statistician records the number of runners from each group that has developed shin splints. They made sure that the results are valid that they have performed the testing three times for each treatment. Illustrate the type of research design used in the situation. Show how the samples were assigned to the treatments.
