Comparative anatomy

High school (ages 12+)
Animals & Nature

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/comparative-anatomy

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific domain?Evolutionary Biology, Zoology, Anatomy, Phylogenetics
2. What is the core methodological principle?Identification and analysis of homologous structures as evidence of common ancestry
3. Why do scientists look at the bones of birds and humans?Because the bones are very similar, showing they come from a common ancestor, and this helps explain how evolution changes bodies for different jobs.
4. How can the same five‑finger arm be used by humans, bats, whales, and birds?The basic bone layout is the same, but each animal changes it to fit its life, like flying or swimming.

Homologous Structures: Anatomical features in different species that share a common evolutionary origin, indicating shared ancestry.
Analogous Structures: Features in different species that serve similar functions but evolved independently, illustrating convergent evolution.
Phylogeny: The evolutionary history and relationships among species or groups of organisms.
Synapomorphy: A shared derived character state that distinguishes a clade (group) and its common ancestor.