24. Which of the following is WRONG concerning BRCA1 gene?(A)BRCA1 gene is considered to be a tumor-
25. Why is the production of transgenic plants somewhat easier than the production of transgenic ani
26. In what type of environment is a scientist most likely to find examples of ongoing speciation?(A
28. If the mitochondria and chloroplasts in eukaryotic cells resulted from endosymbiosis, what featu
30. The presence of which class of biological molecules would allow you to distinguish between an ad
31. Azidothymidine (AZT) is a nucleoside analog used to treat HIV infections. Which step does AZT ha
32. Adaptations that have contributed to the success of plants in terrestrial environments include s
33. Many fungi produce antibiotics, for example, penicillin, that stop bacterial growth. Which is th
34. The most ancient branch point in animal phylogeny is that between having(A)a body cavity or no b
35. Which of the following is NOT a defining trait of the phylum Chordata?(A)notochord(B)vertebrae(C
37. Why is the amniotic egg considered an important evolutionary breakthrough?(A)It prolongs embryon
39. How would a decrease in the number of corticosteroid receptors in the hypothalamus affect levels
40. A “complete digestive tract” differs from a gastrovascular cavity in that only the complete trac
41. Blood flukes are parasitic flatworms that live in the bloodstream of the host. The worm’s inters
43. Development must occur in the order of which of the following sequences?(A)morula cleavage g
44. In humans, identical twins are produced by the separation of cells during(A)organogenesis.(B)bla
45. The exceptionally large diversity of antigen receptors found on B cells and T cells is mostly th
46. What is “matched” between donor tissue and recipient in order to increase likelihood of successf