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_____________________are similar structures which species have, but which perform different functions. They provide evidence of a common ancestor.
Recently, scientists have been able to use ___________to find common proteins and amino acids to determine how closely related species are.
_____________________are features present in modern organisms which are no longer in use.
_________________ show clear changes in an organism over time, the environment organisms lived in, the time period the organism lived in, and where the organism lived.
Click on ALL examples of a vestigial structure?
A whale's pelvis and femur.
A snake's hind legs.
A human's nose.
A human's appendix.
A human's wisdom teeth.
Which IS NOT used as evidence for evolution?
When vertebrates are in the early stages of development (an embryo) they all possess....
gill slits and tails
backbone and hands
hands and feet
tongue and mouth
Tiktaalik is an important ____________________because it shows how fish evolved into tetrapods.
The coelacanth is considered a __________________because it existed for a long time, then there was a gap in the fossil record, and it has been discovered living in modern times.
scary sea creature
Because whales have a pelvis and femurs, it shows whales are descended from an ancestor that was able to _____________________.