The precursor of eukaryotic mRNA is A hnRNA B tRNA C rRNA D snRNA
Option A. Transcription in eukaryotes occurs within the nucleus and mRNA moves out of the nucleus into the cytoplasm for translation. The mRNA is processedfrom the primary RNA transcript, a process called maturation. Initially at the 5' end, a cap (consisting of 7-methyl guanosine or 7 mG) and a tail of poly A at the 3' end are added. The cap is a chemically modified molecule of guanosine triphosphate (GTP). The primary ///RNA transcript is longer and localised into the nucleus, where it is also called heterogenous nuclear RNA (hnRNA) or pre-mRNA. The primary mRNAs are made up of two types of segments; non-coding introns and the coding exons. The introns are removed by a process called RNA splicing.
