Chromosomal Aberrations and Consequences · NCERT Biology

Balanced translocation usually does not show phenotypic effects because:

  1. All genes are duplicated in both segments
  2. Only non-essential genes are deleted
  3. No net loss or gain of genetic material occurs
  4. Chromosome number remains exactly unchanged
Show answer and explanation

Correct answer: No net loss or gain of genetic material occurs

In balanced translocation, genetic material is rearranged without loss or gain. Hence, phenotype often remains normal.

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