China's plan to cut meat consumption by 50% cheered by climate campaigners. China now consumes 28% of the worldâs meat, including half of its pork. The Chinese government has outlined a plan to reduce its citizensâ meat consumption by 50%, in a move that climate campaigners hope will provide major heft in the effort to avoid runaway global warming.
Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule. RNA polymerase is the main transcription enzyme. Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins). RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule. Transcription ends in a process called termination. Termination depends on sequences in the RNA, which signal that the transcript is finished.
Transcription is carried out by an enzyme called RNA polymerase and a number of accessory proteins called transcription factors. Transcription factors can bind to specific DNA sequences called enhancer and promoter sequences in order to recruit RNA polymerase to an appropriate transcription site.Together, the transcription factors and RNA polymerase form a complex called the transcription initiation complex.his complex initiates transcription, and the RNA polymerase begins mRNA synthesis by matching complementary bases to the original DNA strand. The mRNA molecule is elongated and, once the strand is completely synthesized, transcription is terminated.