Crossing over is facilitated by a ____ orientation between homologous chromosomes
a. tightly angled
b. separated, perpendicular
c. tight, perpendicular
d. separated, parallel
e. tight, parallel
ANSWER: e
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Many archaeal chromosomes include plasmids.
Answer the following statement true (T) or false (F)
Gametogenesis is
a. always the result of the process of meiosis. b. the pairing of homologous chromosomes. c. the formation of sex cells. d. the fusion of gametes. e. a process that occurs only in asexually reproducing forms.
The "power stroke" of the myosin head that slides actin past myosin most directly involves _______.
A. binding of ATP B. binding of ADP C. release of Pi D. hydrolysis of ATP
Which of the following drugs are likely to reduce blood pressure: (Select all that apply.)
a. An agonist of alpha and beta adrenergic receptors b. An antagonist of muscarinic receptors c. A drug that increases sodium excretion d. A drug that blocks calcium channels on myocardial cells