Genomic imprinting is a result of ___________
A. Nucleosome location
B. Histone activation
C. DNA methylation
D. Serine to leucine changes in the genetic code
C
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Petals
A. protect the developing flower. B. enclose and protect the ovule. C. produce pollen. D. are part of the gametophyte. E. attract pollinators.
Early classification systems from Aristotle to Linneaus would have been most like what we now call ________
A) the morphospecies concept B) the phylogenetic species concept C) the biological species concept D) the ecological species concept
The regulation of body temperature derives from the activity of the _____
A) cerebrum B) cerebellum C) thalamus D) hypothalamus
Botulinum toxin (Botox) produced by certain bacteria will
A) prevent enzymatic breakdown of neurotransmitters. B) cause continual contraction of smooth muscle. C) initiate an increase in the strength of a transmitted signal. D) inhibit the release of acetylcholine.