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

According to the accepted principles of molecular biology, which of the following criteria must be fulfilled by a molecule to act as a suitable genetic material? (a) It should be able to generate its replica. (b) It should be chemically and structurally stable. (c) It should mutate at a very fast rate to ensure rapid evolution. (d) The presence of a 2'-OH group in its sugar moiety should enhance its structural stabil

Options

  1. A(a), (b) and (e) only
  2. B(a), (b), (c) and (e) only
  3. C(a), (d) and (e) only
  4. D(b), (c) and (d) only

Correct answer

A. (a), (b) and (e) only

Step-by-step solution

A molecule that can act as a genetic material must fulfill the following criteria: 1. It should be able to generate its replica (Replication). Thus, statement (a) is correct. 2. It should be chemically and structurally stable. Thus, statement (b) is correct. 3. It should provide the scope for slow changes (mutation) that are required for evolution. A very fast rate of mutation is not desirable for a stable genetic material. Thus, statement (c) is incorrect. 4. The 2'-OH group present at every nucleotide in RNA is a

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