Which of the following tests are used to diagnose the presence of HIV? pap smears Western Blot & ELISA Eastern Blot & HISA Pregnancy tests

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled