Question 159Asked in CIL MT Systems, 24 Aug 2026 (3:00 PM, CBT-26)

A botanist creates a digital representation of a rare plant's evolutionary tree, where each node records a unique genetic mutation. During research, they…

A botanist creates a digital representation of a rare plant's evolutionary tree, where each node records a unique genetic mutation. During research, they need to extract the chronological sequence of mutations as they would naturally occur along the main lineage. Which traversal algorithm, when applied to the tree, most accurately reflects the order of these mutations if left sub-branches represent earlier side mutations and right sub-branches represent later side mutations?
  1. ALevel order traversal groups mutations by depth, not by evolutionary chronology.
  2. BPerforming an inorder traversal yields the desired mutation sequence along the main lineage.
  3. CA preorder traversal starts with the main mutation, missing proper side branch sequencing.
  4. DApplying a postorder traversal lists mutations from leaves to root, not main lineage order.
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Correct answer: (B) Performing an inorder traversal yields the desired mutation sequence along the main lineage.

From CIL MT Systems PYQ, 24 Aug 2026 (3:00 PM, CBT-26)

This is question 159 of CIL MT Systems PYQ, 24 Aug 2026 (3:00 PM, CBT-26). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.