These are organism that come from the same cell and are genetically identical to one another

Clones aka twins - Every single bit of their DNA is identical. Clones can happen naturallyy identical twins are just one of many examples. Or they can be made in the lab.

This is an alternative form of a gene ... This theory of inheritance states that genes are located on chromosomes which undergo segregation and independent assortment. Chromosome Theory. These are organisms that come from the same cell and are genetically identical to one another.