Without knowing any additional information, a pair of species within the same monophyletic group most likely shares the most recent common ancestor.
A clade is a branch of a phylogeny that includes an ancestral lineage and all of its descendants. Because this group of organisms has the property of monophyly, it is also known as a monophyletic group. The evolutionary history of a group of related organisms is known as phylogeny. It is represented by a phylogenetic tree, which demonstrates how species are related to one another via common ancestors. A clade is a group of organisms composed of an ancestor and all of its descendants.
A "clade" would consist of the common ancestor of apes and all of its descendant species.
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