Answer:
6
Explanation
Six different types of chromosomes constitute a haploid set of chromosomes. Two chromosomes of the same type are called homologous chromosomes and these constitute a homologous pair.
The cells producing sex cells or gametes undergo meiosis (reduction division) so that each gamete contains only one chromosome of a homologous pair.
The gametes are haploid, having half the number of cells as compared to somatic cells.
The gametes or sex cells produced by the organism will have 6 chromosomes if the organism has 12 chromosomes
