<Li> Homoplasy in biological systematics is when a trait has been gained or lost independently in separate lineages during evolution . This convergent evolution leads to species independently sharing a trait that is different from the trait inferred to have been present in their common ancestor . <Ul> <Li> Parallel Homoplasy--derived trait present in two groups or species without a common ancestor due to convergent evolution . </Li> <Li> Reverse Homoplasy--trait present in an ancestor but not in direct descendants that reappears in later descendants . </Li> </Ul> </Li> <Ul> <Li> Parallel Homoplasy--derived trait present in two groups or species without a common ancestor due to convergent evolution . </Li> <Li> Reverse Homoplasy--trait present in an ancestor but not in direct descendants that reappears in later descendants . </Li> </Ul> <Li> Parallel Homoplasy--derived trait present in two groups or species without a common ancestor due to convergent evolution . </Li> <Li> Reverse Homoplasy--trait present in an ancestor but not in direct descendants that reappears in later descendants . </Li>

What is the difference between plesiomorphies and apomorphies