Final answer:
The event that contradicts the central dogma of molecular biology is reverse transcription, where DNA is synthesized from an RNA template, opposing the dogma's stated flow of genetic information from DNA to RNA to protein.
Step-by-step explanation:
The event that contradicts the central dogma of molecular biology is d) Reverse transcription. According to the central dogma, genetic information flows from DNA to RNA to protein. Reverse transcription, however, involves the enzyme reverse transcriptase, which synthesizes DNA from an RNA template. This is in direct contradiction to the central dogma as it suggests a flow of information from RNA back to DNA, which was not thought to occur when the dogma was first proposed. An example of reverse transcription occurs in HIV, where the virus's RNA genome is transcribed into DNA which can then integrate into the host's genome.
Transcription and translation are the two main processes involved in the central dogma of molecular biology. Transcription is the synthesis of RNA from DNA, and translation is the creation of proteins based on the mRNA sequence.