3.3 Unit Review- How has life changed since it began?

Front

What is the significance of jaw size in hominid evolution?

Back

The jaws of hominids evolved to be smaller and less protruding over time, indicating changes in diet and lifestyle.

Front

What is one event that does NOT need to occur for life to first evolve?

Back

Cells must spontaneously generate.

Front

What is Natural Selection?

Back

Natural Selection is the process where better adapted organisms survive to pass traits along to their offspring.

Front

Why don't ostriches fly today?

Back

Ostriches who didn't fly were better adapted to their environment.

Front

How do limb comparisons provide evidence for evolution?

Back

They demonstrate common ancestry among different species.

Front

What is the role of DNA in the evolution of life?

Back

DNA must self-assemble for life to evolve, as it carries genetic information.

Front

What does the term 'common ancestry' mean?

Back

Common ancestry refers to the idea that different species share a common ancestor from which they evolved.

Front

What is the relationship between brain size and jaw evolution in hominids?

Back

The evolution of smaller jaws in hominids is linked to changes in brain size and dietary needs.

Front

What is the difference between artificial selection and natural selection?

Back

Artificial selection is the process by which humans breed organisms for desired traits, while natural selection occurs without human intervention.

Front

What evidence supports the theory of evolution?

Back

Fossil records, comparative anatomy, and genetic similarities provide evidence for evolution.