The local YMCA is having a 5K Run, Walk, or Crawl fundraiser. You decide to volunteer at the first aid station to take care of blisters and other minor injuries associated with these events. It is a cool, overcast morning, making it a perfect day for a race, so you […]

Internet Postings about Whole Foods and Wild Oats From its beginnings as one small store in Austin, Texas, Whole Foods Market has grown into the world’s leading retailer of natural and organic foods, with hundreds of locations in North America and the United Kingdom. Whole Foods was founded by Craig […]

Question: A corporation has invented a new low-calorie sugar substitute. They want to determine if the substitute might be carcinogenic, so they use it in the Ames test with Salmonella his- mutants. The results show no increase in mutant bacterial colonies. They then perform feeding experiments in laboratory rats and find […]

1. How is sex determined in grasshoppers? Can you find other examples of organisms with a similar system of sex determination? 2. Some marine shellfish, such as limpets, become either male or female depending on where they grow. What makes one limpet a male and another a female? 3. Are […]