<em>C. Their degree of relatedness can be estimated from their genes. </em>
<h3><u>Explanation</u>;</h3>
<em><u>Different organisms may differ or have a similar evolutionary relationship.</u></em> Scientists gather information which allows them to make evolutionary relationship between organisms.
<em><u>Phylogenetic inference is the process by which evolutionary relationship between organisms is studied.</u></em> It involves the use of phylogenetic trees which are used to illustrate the genetic relationships of organisms. Genes are studied to estimate the relationship or relatedness between organisms.