Characteristics of Early Earth and Evolutionary Changes

These flashcards cover key concepts related to the characteristics of early Earth and the evolution of organisms based on the student's lecture notes.

What are the general stages of organism evolution according to the lecture notes?

Oxygen → Eukaryotes → Multicellular organisms → Plants → Reptiles → Birds & Mammals.

What major process did prokaryotes develop that was crucial for life on Earth?

Photosynthesis.

Which type of fish transitioned to land animals according to the evolutionary changes?

Lobed-finned fish.

What are the two major groups of early human ancestors mentioned in the notes?

Australopithecines and Homo.

What were the notable traits of Homo erectus and Neanderthals?

They migrated out of Africa and became extinct; they are not our direct ancestors.

How old is Homo sapiens approximately, and what aspect of their existence is highlighted?

Homo sapiens are approximately 150,000 years old, and the focus is on genetic diversity across the globe.