Table 17-1: Chromosome Constitutions in a Normally Diploid Organism with Three     Chromosomes (Identified as A, B, and C) in the Basic Set

Name

Designation

Constitution

Number of chromosomes

Euploids

  Monoploid

n

A B C

3

  Diploid

2n

AA BB CC

6

  Triploid

3n

AAA BBB CCC

9

  Tetraploid

4n

AAAA BBBB CCCC

12

Aneuploids

  Monosomic

2n − 1

A BB CC

5

AA B CC

5

AA BB C

5

  Trisomic

2n + 1

AAA BB CC

7

AA BBB CC

7

AA BB CCC

7