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Chromosomal Aberrations and Consequences · NCERT Biology

Duplication of a chromosomal segment leads to:

  1. Loss of genetic material from the genome
  2. Increase in gene dosage
  3. Change in total chromosome number
  4. Formation of polyploid cell lines
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Correct answer: Increase in gene dosage

Duplication results in repetition of a chromosomal segment. This increases gene dosage, which can disturb normal cellular balance.

Difficulty: Medium Question 4 of 20

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