Evidence of Evolution

Front

What term best describes the relationship between the forelimbs of humans, dogs, birds, and whales?

Back

They are homologous.

Front

How does comparing the skeletons of different animal species support the scientific theory of evolution?

Back

It shows possible common ancestry between organisms.

Front

What is the best method to determine whether two plant species share a recent common ancestor?

Back

DNA sequences.

Front

Which organism is older: gastropod, trilobite, fern, or ammonite?

Back

Trilobite.

Front

Vertebrate embryos pass through similar stages of development. This serves as evidence for what?

Back

Common ancestry.

Front

What is the definition of homologous structures?

Back

Structures in different species that are similar due to shared ancestry.

Front

What is the definition of analogous structures?

Back

Structures in different species that serve similar functions but do not share a common ancestry.

Front

What type of evidence is provided by DNA sequences in evolutionary biology?

Back

Genetic evidence that can indicate common ancestry.

Front

What is the significance of vestigial structures in evolution?

Back

They are remnants of structures that had a function in ancestral species.

Front

What does the fossil record provide evidence for?

Back

It provides a historical record of life on Earth and shows changes over time.