Darwin's tubercle

High school (ages 12+)
Human Body

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/darwin-s-tubercle

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 anatomical classification?Congenital anatomical variation; a thickening on the helix of the external ear
2. What is the discoverer/observer?Charles Darwin, who noted its evolutionary significance
3. Where on the ear is Darwin's tubercle usually found?It is most often on the upper back part of the ear, near the top third of the helix. It can appear on one ear or both.
4. Does Darwin's tubercle hurt or affect hearing?It usually does not hurt. It also does not change how well we hear.

Congenital Anomaly: A structural or functional abnormality present at birth, resulting from developmental errors.
Vestigial Structure: An anatomical feature that has lost its original function but persists as a remnant from an ancestral organism.
Autosomal Dominant Inheritance: A pattern of inheritance where a single copy of a mutated gene on a non-sex chromosome is sufficient to cause a trait or disorder.