Question

which of these are most likely homologous structures?

bat wing

dragonfly wing

tyrannosaurus arm

bat wing and dragonfly wing

bat wing and tyrannosaurus arm

dragonfly wing and tyrannosaurus arm

bat wing, dragonfly wing, and tyrannosaurus arm

Explanation:

Homologous structures are derived from a common ancestor. Bats (mammals) and Tyrannosaurus (dinosaurs, which are reptiles, and birds are their descendants; but in evolutionary terms, there are connections as vertebrates) are vertebrates. Their fore - limb structures (bat wing is a modified fore - limb, Tyrannosaurus arm is a fore - limb) have a common skeletal pattern (like the presence of bones such as humerus, radius, ulna etc., in a basic vertebrate fore - limb plan) due to common ancestry. Dragonfly (insect, an invertebrate) has wings with a completely different evolutionary origin (no common skeletal plan with vertebrate limbs).

Answer:

bat wing and Tyrannosaurus arm