Then, people could start reporting all their medical issues—headaches, halitosis, heart disease—and we will begin to see commonalities between genes and conditions we do not generally regard as genetic.
However, there are commonalities among all of them.
Taking your time exchanging emails allows time to share information and discover commonalities and similar interests over a longer period of time.
The final set of commonalities discovered includes these typical behaviors exhibited by bullies.
In other words, twins may really have the capability to know what the other is thinking and whether the other is feeling any pain, sadness, etc. On the physical side, twins sometimes have other commonalities, such as missing the same tooth.