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JIPMER 2009
Exam
JIPMER
Year
2009
Subject
Zoology
Chapter
Principles of Inheritance and Variation

JIPMER 2009 · Zoology · Principles of Inheritance and Variation

Chromosome complement with 2 n-1 is called

Chromosome complement with 2n−12 n-1 is called

Options

  1. Amonosomy
  2. Bnullisomy
  3. Ctrisomy
  4. Dtetrasomy

Correct answer

A. monosomy

Step-by-step solution

When a change in the chromosome number does not involve entire sets of chromosome and restrict to only a few of chromosome, the situation is called aneuploidy. Aneuploidy may be of following types (a) Monosomic (2n−1)(2 n-1) (b) Trisomic (2n+1)(2 n+1) (c) Nullisomic (2n−2)(2 n-2) (d) Tetrasomic (2n+2)(2 n+2) (e) Double momosomic (2n−1−1)(2 n-1-1) (f) Double trisomic (2n+1+1)(2 n+1+1)
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