The drug dideoxycytidine (used to treat certain viral infections) is a nucleotide made with 2',3'-dideoxyribose. this sugar lacks –oh groups at both the 2'and 3' positions. explain why this drug stops the growth of a dna chain when added to dna.

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

What are some natural processes that represent physical and chemical changes?

Apuppy’s tendency to chew is inherited through which of the following? a. through learned behavior b.through genes c. through seasonal cycles d. through hibernation