How may an enhancer sequence facilitate transcription?
What will be an ideal response?
Ans: The enhancer may alter the tertiary structure of the template DNA, causing a loop that brings activators in proximity to a gene's promoter.
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All of the following statements are evidence that evolution of the FoxP2 gene may have contributed to the evolution of language in humans EXCEPT:
A. Individuals with mutations in FoxP2 have problems with speech and language. B. The FoxP2 gene shows an elevated frequency of non-synonymous to synonymous mutations when comparing human-chimp sequences relative to mousechimp comparison. C. Studies of Neanderthal DNA have shown that Neanderthals possessed the modern human version of FoxP2. D. FoxP2 is an evolutionarily conserved transcription factor that plays an important role in development, including brain development.
Which of the following activities is not associated with posttranslational processing?
A) glycosylation B) specific cleavage of polypeptides C) chaperonin activity D) addition of lipid groups E) polyadenylation
Lakes with elevated dissolved nutrients and low water clarity are called
A. lotic. B. oligotrophic. C. eutrophic. D. pelagic. E. photic.
The adrenal medulla is stimulated to release catecholamines during sympathetic autonomic nervous responses.
Indicate whether the statement is true or false.