Mark is a typical high school student who is sexually active. If he and nine of his best high school friends are tested for sexually transmitted diseases, he should assume of that of these 10 young men, ___ will have positive test results

The next (or the first) time you stare eye to eye with a chimpanzee, remember to keep this humbling fact in mind: You and the chimpanzee have ___ identical DNA sequences

a. 90–95% b. 99% c. 95–98% d. 95%

While chimpanzees and humans resemble each other closely in terms of DNA sequences, we do differ dramatically in measures of genetic ___

a. genotype b. regulation c. expression d. makeup