Final answer:
Natural selection favoring the same adaptive trait in two unrelated lineages results in homoplasious traits. Homoplasious traits are similar traits that have evolved independently in different lineages and are not derived from a common ancestor.
Step-by-step explanation:
Natural selection favoring the same adaptive trait in two unrelated lineages results in homoplasious traits.
Homoplasious traits are similar traits that have evolved independently in different lineages and are not derived from a common ancestor.
For example, wings in birds and insects are homoplasious traits because they evolved independently in these two unrelated lineages as adaptations for flight.