( ): The natural coiled conformation of two complementary, antiparallel DNA chains.
( ): The natural coiled conformation of two complementary, antiparallel DNA chains.
Many strands, typically 4 or 5 but as many as 10 or more, can come together in β sheets. Such β sheets can be like what?（） A: Antiparallel B: Parallel C: Mixed D: None
Many strands, typically 4 or 5 but as many as 10 or more, can come together in β sheets. Such β sheets can be like what?（） A: Antiparallel B: Parallel C: Mixed D: None
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