Genes" is the one among the following choices given in the question that we call these units of hereditary information today. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
The binding of a cell<span> to another </span>cell<span>, or a cell to a </span>surface<span>, via specific </span><span>cell adhesion molecules</span>
