Somatic cell chromosomes (body cells) are in pairs. if you mean 12 chromosomes,Then there will be 6 pairs, groups of two, chromosomes. The gamete (aka sex cell) will thus contain 6 chromosomes.
One chromosome from each pair ends up in one gamete, normally.
Biology is the study of the natural world.Hope this helps!!
Cooler and even the place in which it is is going to be more humid.