Which statement correctly describes transcription?
A) RNA chains of all genes are synthesized from the same DNA strand, with the growing RNA strand always starting at the 5' end and moving toward the 3' end.
B) RNA chains of different genes can be transcribed from either DNA strand, with RNA polymerase traveling from the 5' end and moving toward the 3' end.
C) RNA chains of all genes are synthesized from the same DNA strand, with the growing RNA strand always starting at the 3' end and moving toward the 5' end.
D) RNA chains of different genes can be transcribed from either DNA strand, with RNA polymerase traveling from the 3' end and moving toward the 5' end.
D
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What structure is responsible for selecting and transporting only properly processed eukaryotic mRNAs into the cytoplasm?
A. ribosomes B. spliceosome C. snRNPs D. nuclear pore complex E. RNA polymerase
Which of the following is the best definition of sympatric speciation?
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