Which of the following describes the basic scheme of the clock genes present in neurons of the suprachiasmatic nucleus of the hypothalamus? Choose the correct option
A) An increased expression of immediate early genes plays a role in satisfying the higher metabolic demands of the awakened brain.
B) Some of the genes from mitochondria are related to changes in synaptic strength and affect the expression of other genes.
C) Clock genes perpetrate a cyclic negative feedback loop in which the clock gene expresses a protein whose presence decreases gene expression in a pattern consistent with circadian rhythms.
D) The genes from mitochondria may be associated with the absence of learning and memory formation.
Ans: C
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