Q1. A man of Mediterranean ancestry goes to his doctor with the next symptoms: he is very tired all of the time, and he has complexity catching his breath after even mild exercise. His doctor orders the following tests: CBC, hematocrit, and differential WBC count. The tests show immature erythrocytes, […]

Unsaturated fatty acids are often classified according to the number of carbon atoms between the terminal methyl carbon (the omega carbon) and the closest double bond to the methyl end of the chain. An omega 6 fatty acid, for example, would have a double bond in position 6 counting from […]

the drosophila allele (by) determines the mutant phenotype blistery wings and the wild type allele (by+) determines normal wings. At another gene, the allele (ss) determines the mutant phenotype spineless bristles and the wild type allele (ss+) determines spiny bristles. A female fly that is heterozygous for both genes is […]

U.S. Plans New Strategy for HIV/AIDS The Obama administration plans to unveil a new AIDS strategy Tuesday, aimed at reducing new infections and increasing the number of HIV-positive people getting care. Details of the program are to be announced at a White House press conference, but the New York Times, […]