Evidence of Evolution Worksheet (3/23/2024)

Which of the following observations most strongly supports evoluntionary links between fossil organisms and modern organisms?

The embryos in the picture look similar. The embryos have similar features and structures. Does this suggest that the embryos have a common ancestor?

Click on all the structural differences between butterfly and bird wings

Butterflies and birds wing both have the same purpose but very different structure. These structures are analogous. Do analogous structures show common ancestry?

Why might cave fish have evolved without eyesight?

The wings of bats and birds are both used for flight but have different structures. Birds and bats are not related

Snakes have little leg bones that have no function

The embroys of humans, fish, and salamanders have common features. This indicates a common ancestor.

Whales have a pelvis and little femur bones even though they do not have legs.

Horses, cats, dogs, and humans have the same number of bones in the upper arm. These organisms have similar bone structure in the limbs but are used for different functions. This indicates a common ancestor.

Dolphins and sharks have a streamlined body, flippers, and a tail however, dolphins are mammals and sharks are fish. Dolphins and sharks do not have a common ancestor.

How many differences are there between the human and the horse (count the number of highlighted sequences)

How many differences are there between the human and the tuna (count the number of highlighted sequences)

How many differences are there between the human and the monkey (count the number of highlighted sequences)

What organism is closely related to humans?

What organism is least closely related to humans?

What is the BEST evidence to support evolution and common ancestory?