At intervals, DNA coiled around histones forms complexes called ________; these complexes may also coil around other histones.
Fill in the blank(s) with the appropriate word(s).
nucleosomes
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The myxoma virus is transmitted from one rabbit to another
A) In drinking water. B) By predators. C) By blood-sucking insects. D) By interaction with other herbivores.
This figure shows the muscles of facial expression. What muscle does number 7 indicate?
A. Depressor labii inferioris B. Mentalis C. Sternocleidomastoid D. Levator labii superioris E. Risorius
Which of the following muscles of facial expression is not innervated by the facial nerve?
A. Zygomaticus major B. Corrugator supercilii C. Buccinator D. Levator palpebrae superioris E. Orbicularis oculi
Atrial contraction occurs just before
A. atrial relaxation and ventricular filling. B. isovolumetric relaxation. C. ventricular ejection. D. isovolumetric contraction.