review

what are the remains of an organism or it’s activities called?

Types of transitional fossils:

• Derived trait and Ancestral traits

• vestigial fossils and embryo fossils

• homologous fossils and analogous fossils

• all of them

Two types of comparative anatomy

• vestigial structure and Homologous structure

• Homologous structure and Analogous structure

• derived and ancestral

• vestigial and homologous and analogous

example of Analogous structure:

• Bird and Dragonfly

• crocodile and lizard

• snake and fish

• they are all Homologues structure

which embryos look the same

• mammals, birds, reptile, amphibian, fish.

• mammals and birds

• only fish

• they all look different

what do scientists look for in comparative Biochemistry to look how related species are?

• protein structure

• embryo structure

• species structure

• fossil record