The set contained in another set is termed as a sub-set.
subset
This would be a subset.
Any subset.
True.
a set of which all the elements are contained in another set.
a set whose members are other members of another set a set contained within them
Element
A haploid Chromosome set. {Or, a haploid set of Chromosomes.}
This is called the complement of the set.
density
the answer is complement