Secondary spermatocytes divide by what process?
A. Meiosis I
B. Meiosis II
C. Meiosis
D. None of these are correct.
Answer: B
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What is the name for the bony termination of the vertebral column in birds where tail feathers attach?
A) furcula B) ventriculus C) columella D) pygostyle
Innate defenses include mechanical and chemical barriers, whereas adaptive defenses
counter specific disease-causing agents. Indicate whether the statement is true or false
Dural venous sinuses are areas where
A. glial cells are formed. B. large numbers of nuclei congregate. C. cerebrospinal fluid is stored. D. the meningeal and periosteal layers separate to form large blood-filled spaces. E. cerebrospinal fluid is produced.
Describe the H zone of the sarcomere. The H zone:
A. contains both myosin and actin myofilaments B. contains only actin myofilaments C. contains only myosin myofilaments