Homologous, Analogous, and Vestigial Structures 2023

Master homologous, analogous, and vestigial structures. Identify evolutionary links!

Sort each definition as either a homologous, analogous, or vestigial structure. Homologous Structure Feature that is similar in structure in different organisms but has different functions Examples include the wing of a bat and the hand of a human Evidence of a Common Ancestor Analogous structure Feature that performs a similar function in different organisms but is not similar in origin Is not evidence of a common ancestor . Examples include the wing of a bird and the wing of an insect Vestigial Structure Remnant of an organ or structure that had a function in an early ancestor Example includes leg bones in whales and snakes. Human examples include appendix, goose bumps and wisdom teeth Fossil evidence shows that vestigial structures in living organisms today are not found in ancient organisms. have always been vestigial and thus useless mutations. were useful structures to their ancestors. Which would be an example of an analogous structure? The wing of a bird and the wing of a fly. The wing of an fly and the wing of a mosquito. The legs of a kangaroo and the legs of a rabbit. The legs of a horse and the legs of a zebra. Look at the picture of the penguin and the fish above. The flippers of the penguin and the fins of the fish is an example of what type of structure? Homologous Analogous Vestigial The structure of penguin fins and fish fins indicate... Fish and penguins share a recent common ancestor. Fish used to have wings that are now adapted for swimming. Fish and penguins are subjected to similar selection pressures. Penguins used to have fins that have evolved into wings. In the picture above, which species on the chart (A,B,C,D,E,F) is the common ancestor? A B C D E F Did the round nose of Species E and Species F come from the common ancestor? Yes No Did the square nose of Species D and Species G come from the common ancestor? Yes No The wings of a bat and the wings of a butterfly are similar in that they both allow the organisms to fly. Are bats and butterflies closely related?Are the wings on these two organisms Homologous or Analogous Structures? Yes, homologous No, analogous No, homologous Yes, analogous Which of the following would be an example of an analogous structure? The arms of a human and a whale's flippers. The flippers of a whale and the fins of a shark. The arms of a human and wings of a bat. Monarch and Blue Morpho Butterflies have similar wings. Are monarch butterflies and blue morphos closely related?Are the wings of these two organisms an example of Homologous or Analogous Structures? Yes, homologous No, analogous No, homologous Yes, analogous Which of the following would be an example of a homologous structure? (Choose 2) The arms of a human and a whale's flippers. The flippers of a whale and the fins of a shark. The arms of a human and wings of a bat. The duck billed platypus and a duck. Is it possible for a structure to be considered homologous without the two species having a recent common ancestor? Yes No