Multiple choice

Which chromosomal alteration does NOT alter genic balance, but MAY alter phenotype

  1. deletion

  2. inversion

  3. duplication

  4. nondisjunction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An inversion occurs when a segment of a chromosome is reversed. Because no genetic material is lost or gained, the genic balance remains the same, but the change in gene order can alter the phenotype due to position effects.