The histone protein H4 from cows and the H4 from p representing groups that diverged from one another billion years ago, differ by only two amino acid residu 102 total residues. The changes are conservative - thymus H4 is replaced by an lle in peas: Iys77 in the
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- 1. Suppose that, in Example 2.27, 400 units of food A, 600 units of B, and 600 units of C are placed in the test tube each day and the data on daily food consumption by the bacteria (in units per day) are as shown in Table 2.6. How many bacteria of each strain can coexist in the test tube and consume all of the food? Table 2.6 Bacteria Strain I Bacteria Strain II Bacteria Strain III Food A 1 2 0 Food B 2 1 1 Food C 1 1 2In birds, wingspan is determined by two genes, one with complete dominance of one allele over theother, one with additive effects. Birds with genotype aabb has 16 cm long wingspan, whereas those with AABB has 20 cm long wingspan. A cross between AABB and aabb parents produced F1 with19cm wingspan. Crossing the F1s produced F2 with the following phenotypes (in cm): 20.0 19.6 18.3 20.0 19.1 18.7 18.2 17.316.0 19.2 17.8 18.4 19.3 19.5 20.0 19.7 NOTE: write the formula and the final answer a. Mean of the data b. Variance of the data c. Standard deviation d. According to these data, which wingspans are within one standard deviation of the mean?The ecologist studying the effects of phytohormones (auxin and cytokinin) on tumor induction in plants by insects, performed an experiment to determine if the form of the cytokinin affected the growth of tumors. She performed treatments each with the same total cytokinin and auxin concentrations, but with individual or mixtures of a few cytokinins (TZ – trans-zeatin, CZ - cis-zeatin, IP – isopentenyl adenosine, and IAA - indole acetic acid). Treatment 1 had auxin (IAA) alone so is not pertinent to the questions asked here, treatment 6 had TZ + IAA, treatment 17 had IP + IAA, treatment 18 had TZ+IP +IAA, treatment 19 had CZ + IAA, and treatment 20 had TZ+CZ+IP+IAA. Perform a priori contrasts comparing the effects of treatments with IP to treatments without IP and treatments with TZ to treatments with CZ (no treatments with both TZ and CZ). Use the data in the file "cytokinin.csv". (Note: Beware of missing value on row 13..) cytokinin data Treatment sumdiff 1 1 0.02063830 2 1…
- Random samples of 900 people in the United States and in Great Britain indicated that 60% of the people in the United States were positive about the future economy, whereas 66% of the people in Great Britain were positive about the future economy. Does this provide strong evidence that the people in Great Britain are more optimistic about the economy (alpha = 0,01)?In a study of pain relievers, 20 people were given product A, and all but 7 experienced relief. In the same study, 100 people were given product B, and all but 27 experienced relief. Please help me feel in the blanks Product--performed worse in the study because --% failed to get relief with this product, whereas only--- % failed to get relief with Product?Suppose a birth defect has a recessive form of inheritance.In a study population, the recessive gene (a) initially has aprevalence of 25%. A subject has the birth defect if bothmaternal and paternal genes are of type a. A further study finds that after 10 generations (≈200 years)a lot of inbreeding has taken place in the population. Twosubpopulations (populations A and B), consisting of 30%and 70% of the general population, respectively, haveformed. Within population A, prevalence of the recessivegene is 40%, whereas in population B it is 10%. Suppose that a baby is born with a birth defect,but the baby’s ancestry is unknown. What is the posteriorprobability that the baby will have both parents from population A, both parents from population B, or mixed ancestry,respectively? (Hint: Use Bayes’ rule.)
- In the current pandemic, researchers are working on creating antibody tests to determine which individuals have already had an infection caused by the COVID-19 virus. If someone has been infected, then they will have certain antibodies in their system and the hope is that a highly accurate test can be created to detect these antibodies. Assume a researcher creates a new antibody test, which for individuals who are known to have had the infection in the past and thus truly have the COVID-19 antibodies, gives a positive result 95% of the time. This same test gives a negative result 90% of time for people who do not have the antibodies. Assume that COVID-19 has affected 5% of the population in the region of interest. What is the probability someone has NOT been infected previously given that their antibody test result comes back positive? [four decimals]An entomologist writes an article in a scientific journal that claims that fewer than 16 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to produce light. A) H 0 : p > 0.0016 H 1: p ≤ 0.0016 B) H 0 : p = 0.0016 H 1: p > 0.0016 C) H 0 : p = 0.0016 H 1: p < 0.0016 D) H 0 : p < 0.0016 H 1: p ≥ 0.0016In 1940, a county land-use survey showed that 10% of the county land was urban, 50% was unused, and 40% was agricultural. Five years later, a follow-up survey revealed that 70% of the urban land had remained urban, 10% had become unused, and 20% had become agricultural. Likewise, 20% of the unused land had become urban, 60% had remained unused, and 20% had become agricultural. Finally, the 1945 survey showed that 20% of the agricultural land had become unused while 80% remained agricultural. Assuming that the trends indicated by the 1945 survey continue, compute the percentages of urban, unused, and agricultural land in the county in 1950 and the corresponding eventual percentages.
- The UWI Open Campus has commissioned a study to determine how student will perform in ECON3080 based on the hours of studying each semester. Students are separated by gender and the results of the study are given below: Males Females Hours Studying ECON3080 Grade Hours Studying ECON3080 Grade 377 92 182 51 280 100 99 41 187 99 44 38 225 62 387 90 157 91 200 75 280 99 331 48 80 32 263 78 374 88 377 93 141 59 297 49 385 72 229 88 238 30 254 80 105 94 347 80 180 53 119 55 288 48 142 67 241 96 293 45 72 57 318 36 314 82 319 94 196 81 60 60 209 79 319 42 306 79 184 81 167 51 193 56 380 44 239 34 389 88 144 49 122 49 97 100 354 76 337 33 327 94 330 78 181 70 157 57 349 66 262 43 117 35…A study was performed concerning medical emergencies on commercial airline flights. A database was constructed based on calls to a medical communications center from 5 domestic and international airlines representing approximately 15% of the global passenger flight volume from January 2005 to December 2007. There were 11,000 in flight medical emergencies (IFM) among 8,000,000 flights during the study period. Assume that there is at most 1 IFM per flight. Suppose a flight attendant works on 3 flights per day for each of 300 days per year. Also, assume that the flight attendant’s total duration of employment is 20 years. What is the approximate probability that he/she encounter at least 5 IFM’s over a 20 year period? (b) Suppose we observe 80 alcoholics with cirrhosis of the liver, of whom 25 have hepatomas, that is, liver cell carcinoma. Suppose we know, based on a large sample, that t`he risk of hepatoma among alcoholics without cirrhosis of the liver is 25%. What is the approximate…An agricultural scientist tests six types of fertilizer, labeled A, B, C, D, E, and F, to determine whether any of them produces an increase in the yield of lima beans over that obtained with the current fertilizer. For fertilizer C, the increase in yield is statistically significant at the 0.05 level. For the other five, the increase is not statistically significant. The scientist concludes that the yield obtained with fertilizer C is greater than that of the current fertilizer. Explain why this conclusion is not justified.