The genotype frequencies of a two allele polymorphism were measured from a sample of 200 individuals. The results were: Genotype A/A A/B B/B Frequencies 0.0 0.4 0.6 Does this represent a significant departure from the Hardy-Weinberg ratios? Further studies show that the absence of the A/A genotype is due to […]

1) Since calcium and magnesium salts of fatty acids are insoluble in water, how would you expect this to affect the usefulness of soap in hard water? 2) If you were to make soap (using 4 grams of lard, 2 mL of 7.8 M sodium hydroxide & boiling it) and […]

Addresses the following course goals and objectives: Use knowledge of biological principles to ask relevant questions about the natural world make observations and discriminate between scientific and pseudoscientific explanations a) Genetically modified food. What is the purpose of human-made genetic recombinations in food? Are foods that contain genes resulting from artificial […]

In most organisms, oxygen slows down glycolysis, and pyruvate is directed towards the TCA cycle rather than fermentative pathways (this is called the Pasteur Effect). Some strains of the brewers’ yeast Saccharomyces cerevisiae display the opposite effect, sometimes called the Crabtree Effect (or, more correctly, glucose repression), in which high concentrations of glucose accelerate […]