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Which of the following is incorrect about molecular taxonomy?

  1. A
    Molecular taxonomy compares DNA, RNA, and protein sequences.
  2. B
    It helps determine evolutionary relationships between species.
  3. C
    It relies only on external features for classification.
  4. D
    It is useful in identifying microorganisms.

Solution & Step-by-step Explanation

Molecular taxonomy (Chemotaxonomy/Cytotaxonomy) shifts the focus from external morphology to internal molecular data. It uses the "molecular clock" found in DNA and protein sequences to calculate how long ago two species diverged from a common ancestor.

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Which of the following is incorrect about molecular taxonomy?
A
Molecular taxonomy compares DNA, RNA, and protein sequences.
B
It helps determine evolutionary relationships between species.
C
It relies only on external features for classification.
D
It is useful in identifying microorganisms.

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