- A Mainly the enzymatic addition of a 5 prime methylguanosine cap structure
- B Capping (5 prime), poly-A tail (3 prime), and splicing out introns
- C Mainly the removal of introns from the transcript by the spliceosome complex
- D Mainly the chemical methylation of cytosine bases within the DNA template
Correct answer: B. Capping (5 prime), poly-A tail (3 prime), and splicing out introns
Explanation: Pre-mRNA processing: 5-prime methyl guanosine cap + poly-A tail (added at 3-prime end) + splicing out introns by spliceosomes.
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →