Discuss how the evolution of freshwater and saltwater stickleback pelvic fins are dependent on enhancer function.  Make sure your discussion details the predator prey selection process had on this evolutionary change.

In activity you watched the "inner fish" which centered around the fossil tiktaalik who was a close relative of ichthyostega. If you were to run DNA on Ichthyostega or Tiktaalik you would find that they are most closely related to; The Sarcoptyrygii (lobe finned fishes) The Actinopterygii (Ray finned fishes) The chondrichtyes (catilagenous fishes) The cetaceans (whales and dolphins)

Describe how a snake moves by lateral undulation. Why might this form of locomotion be inefficient on an unstable surface (such as sand) or a surface lacking irregularities? What forms of locomotion would work for a snake under these conditions?

The South Florida snake is likely extinct. What most likely happened at some point in the past? A) Changes in the environment occurred, and the snakes could not adapt. B) The South Florida rainbow snake never had the right kind of adaptations to survive. C) Changes in the environment occurred, and the snakes adapted very well. D) The South Florida rainbow snake did not use sensory information to its environment.

Which of the following structures is unique to mammals?   Question 6 options:   A)  Primitive meninx   B)  Dura mater   C)  Pia mater   D)  Secondary meninx

In a lab practical, you assessed the jumping performance of a locust by measuring the distance jumped. You also measured the speed of extension movements of the tibia of a locust’s isolated hind leg that were elicited by brief electrical stimuli that you delivered to the extensor tibiae muscle through fine electrodes. Briefly explain how these two experiments together shed light on the mechanisms permitting locusts to jump further than one metre despite their small size.

What's a different adaptation that will help a sea turtle survive and reproduce? Describe the adaptation. Is it a physical, behavioral, or chemical, adaptation? How does the adaptation help the sea turtle survive?

How is it that a mutation in the Ptx1 can allow it to stop being active in the pelvic area, but not in the other tissues of stickleback fish? Group of answer choices A- The mutation is in the GENETIC SWITCH that turns ON/OFF the genes that lead to PRESENCE/ABSENCE only of pelvic fins.   B- The mutation is in the GENE that makes the materials that build only the pelvic fins.