Genes for color blindness and hemophilia are linked on the X-chromosome in humans with a recombination frequency of 30 %. A woman whose father was a color blind hemophiliac and mother was normal with no history of color blindness and hemophilia wants to have children. The prospective father is normal […]

Question: In 1997, the magazine Public Interest published an article entitled “IQ and economic success” in which can be found the following table relating IQ to earnings (data are from 1992).  What percentage of the population earns more than $36,000?  What percentage earns from $27,000 – $36,000?  What percentage earns from $20,000 – $27,000? What percentage […]

Q. Dozens of potato varieties exist, differing from each other in potato-tuber size, skin colour, flesh colour, and shape. One might construct a classification of potatoes based on these morphological traits. Which of these criticisms of such a classification scheme is most likely to come from an adherent of the […]

1. Which animals have four-chambered hearts?2. The barrier to invasion by microbes involves?3. Which are divided into two groups: T cells and B cells? Macrophages, lymphocytes, complete cells, or platelets4. Gas exchange across a membrane requires: moisture, transport proteins, pressure gradients, moisture and pressure, or all of the above5. Actual […]