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A study is conducted in patients with HIV. The primary outcome is CD4 cell count which is a measure of the stage of the disease. Lower CD4 counts are associated with more advanced disease. The investigators are interested in the association between vitamins and mineral supplements and CD4 count. A multiple regression analysis is performed relating CD4 count to use of supplements ( coded as 1=yes, 0=no) and to duration of HIV in years ( i.e. the number of years between the diagnosis of HIV and the study date) for the analysis, y=CD4 count. Y=302 +15.1 supplements- 18.6 duration of HIV.
A) What is the expected CD4 count for a patient taking supplements who has had HIV for 2.5 years.
B) What is the expected CD4 count for a patient not taking supplement who was diagnosed with HIV at study enrollment?
C) What is the expected CD4 count for a patient not taking supplements who has had HIV for 2.5 years
Imagine this situation: Species #1 and Species #2 are unrelated, but each produces an enzyme capable of hydrolyzing soybean oil. How can this be reconciled with the fact that enzymes are highly specific to their substrates?
Explain the term "ecotype" and the significanace relative to revegatation of an are that has been burned?
The prospective father is normal with no history of either color blindness or hemophilia in his family. What is the probability that she will have a normal child
Assume that investigators crossed a strain of flies carrying the dominant eye mutation Lobe on the second chromosome with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body.
The end products of tryptophan degradation are indole and pyruvic acid. Why do we test for the presence of indole rather than pyruvic acid as the indicator of tryptophanase activity?
A analyzer measured BMI in 12 patients who are free of diabetes and participating in a study of risk factors for obesity and found a mean BMI of 31.7 with a standard deviation of 5.9.
what is the ultimate source of plate tectonics? a.the sun b.global magnetic fields c.thermonuclear reactions d.gravity e. house music
A haploid cross is made in which the mutant allele has GC at base position 200 in DNA of a certain gene, and the wild type has AT. What proportion of progeny will have the hybrid base pairs GT or AC?
However, this theory doesn't account for the lack of WW genotype in the population. Any thoughts?
Assume you work with petunias and you have identified a single gene that causes their flowers to either be all pigmented (solid), or streaked with white.
In addition to the main bacterial chromosomes, most bacteria also carry additional mini-chromosomes (plasmids), which carry nonessential genes or provide special functions.
A kan-r, tet-r plasmid is treated with the restriction enzymeBglI, What anitbiotic would you put in the growth medium to ensure that each colony has the plasmid, Which phenotype will contain Neurospora DNA
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