Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2026BiologyChapterActual

Which of the following statements is incorrect with respect to a transcription unit in DNA?

Options

  1. AThe terminator is located towards the 3' end (downstream) of the coding strand and usually defines the end of
  2. BThe DNA strand which has the polarity 5' 3' does not code for anything and is referred to as the coding strand
  3. CThe promoter is located towards the 5' end (upstream) of the structural gene, and this reference is made with
  4. DBy switching the position of the promoter with the terminator, the definition of coding and template strands c

Correct answer

C. The promoter is located towards the 5' end (upstream) of the structural gene, and this reference is made with

Step-by-step solution

In a transcription unit, the promoter and terminator flank the structural gene. The promoter is located towards the 5' end (upstream) of the structural gene. This reference is made with respect to the polarity of the coding strand, not the template strand. The DNA strand with 3' 5' polarity acts as the template, while the strand with 5' 3' polarity is the coding strand. The terminator is located towards the 3' end (downstream) of the coding strand. Therefore, the statement that the reference for the promoter's posi

Practice Chapter on Quantrex Academy →

More from Chapter

Consider the following three biomolecules: X: Uridine Y: Cytidylic acid Z: Guanine Choose the option that correctly categorizes X, Y, and Z. 2026The complete, catalytically active enzyme together with its bound non-protein constituent is known as: 2026During a laboratory experiment, a student accidentally boils a sample of salivary amylase before adding it to a starch solution. Which of the following best explains the most likel 2026During a biological survey, a researcher discovers a new organism. To classify it properly, she examines its external and internal structure, cellular organization, developmental p 2026Given below are the stages in the sexual reproduction of higher fungi. Arrange the following stages in the correct sequence. A. Fusion of parental nuclei (Karyogamy) B. Meiosis in 2026Read the given statements regarding the general characteristics of bryophytes and select the incorrect statement. 2026Arrange the following male reproductive structures of gymnosperms in descending order of their physical hierarchy (macroscopic to microscopic). A. Microsporangium B. Microspore C. 2026Which of the following sets of plants is correctly paired with the nature of its dominant plant body and the status of its vascular tissues? 2026 Full Chapter list All NEET PYQs