B-LS4-1 Evidence of Common Ancestry Flashcard

Front

What is the role of DNA analysis in supporting the theory of evolution?

Back

DNA analysis reveals genetic similarities between different species, indicating common ancestry.

Front

What is an example of a homologous structure?

Back

The forelimbs of a human and the forelimbs of a cat are homologous structures that support common ancestry.

Front

How do vestigial structures provide evidence for evolution?

Back

Vestigial structures are remnants of structures that were functional in ancestors, indicating evolutionary change.

Front

What does biogeography reveal about species distribution?

Back

Biogeography shows that similar species are found in similar environments across the world, supporting the theory of evolution.

Front

How does embryology support the theory of evolution?

Back

Embryology reveals that embryos of different species have similar stages of development, suggesting common ancestry.

Front

What is common ancestry?

Back

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

Front

Define homologous structures.

Back

Homologous structures are body parts in different species that share a similar structure but may have different functions, indicating common ancestry.

Front

What are vestigial structures?

Back

Vestigial structures are body parts that have lost their original function through evolution, such as the human appendix.

Front

Explain the significance of fossil evidence in evolution.

Back

Fossil evidence provides a historical record of life on Earth, showing how species have changed over time and supporting the theory of evolution.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.