In humans, the pelvis and thigh bone are used for walking. Whales also have a tiny pelvis and thigh bone, which suggests they used to have legs. The pelvis and thigh bone in a whale are examples of ________.Group of answer choiceshomologous structuresfossilsnatural variationvestigial structures

Whales have pelvic (hip) bones, even though they don't have legs. These are called vestigial structures - bones or other structures that aren't useful but are still there. What do whales' pelvic bones suggest?AThat whales are mammals and have much of the DNA as human beingsBThat one whale was born without legs and now no whales have legsCThat whales have an ancestor that had legsDThat whales are related to sharks

Ostriches have wings, but do not fly.  Humans have an appendix with no apparent function.  Whales contain bones for rear legs.  Each of these are examples ofGroup of answer choicesnatural selectionvestigial structuresanalogous structureshomologous structures

Select all of the skeletal adaptations present in humans that allow locomotion by bipedalism.Multiple select question.arms longer than legsbig toe not opposablereduced lumbar vertebraelong, strong leg bonesforamen magnum located at the back of the skullbowl-shaped pelvis

Select all of the skeletal adaptations present in humans that allow locomotion by bipedalism.Multiple select question.arms longer than legsforamen magnum located at the back of the skullbowl-shaped pelvisbig toe not opposablereduced lumbar vertebraelong, strong leg bones

The structures of the front flipper of a whale and the forearm of a wolf have similar bone structure and derive from a common ancestor. This is an example of which of the following?