1.The enzyme recombinase is required at which stage of meiosis
(1) Pachytene
(2) Zygotene
(3) Diplotene
(4) Diakinesis
2.The drug of choice to treat post-myocardial infarction ventricular arrhythmias is:
A. propranolol
B. procainamide
C. quinidine
D. lidocaine
E. digoxin
3.Two AaBb individuals are crossed. What is the probability that a particular offspring will show one or both of the dominant traits? (A and B are dominant to a and b, respectively, and are unlinked.)
A. 1/16
D.12/16
B. 3/16
E.15/16
C.9/16