Fossils

What is transitional fossils?

Fill in spaces in evolution

showing traits for the derived species & traits of ancestors that illustrate the gradual changes and adaptations over time, providing evidence for the evolutionary process.

Why are Tiktaalik “"stegas” & Hyperpeton important to tetrapods evolution?

Shoulder blades

Elbow & wrists

shows how we transitioned from water to land with 4 limbs and loss of fins

Where are Pharyngel pouches located in developing vertebrae embryos?

fish develop gills

lower jaws for humans

embryos develop in the neck

What is the function of the sonic hedgehog gene?

single gene that makes the digits & hands

What does research on sonic hedgehog gene say about our ancestry with other animals?

performs the exact same development in all other vertebrae embryo development

Skate it creates extra fins in fish