👉 Tetrasporous refers to a type of organism that has two sets of chromosomes, one set located on each of its cells. This means that there are two copies of each chromosome in each cell, but the number of copies of each chromosome differs between the two sets. For example, let's consider a tetrapod animal, such as a frog or a snake. If we have two sets of chromosomes (one set for each cell), then one of these cells will contain one copy of