Practice question
Question
An open reading frame (ORF) is defined as
Explanation
continuous codons without stop accurately defines or describes the concept asked in this question. Within Acid, Base, pH, precise definitions and terminology are essential for clear scientific communication. The other options (any stretch of DNA, RNA without introns, and protein coding exon) either describe related but distinct concepts, use incorrect terminology, or confuse similar-sounding terms that have different scientific meanings. A thorough understanding of exact definitions helps distinguish between closely related biological concepts and is crucial for competitive examinations.