Beak Shape Difference in Galapagos Finches Was One of the Earliest

question 18

Multiple Choice

Beak shape difference in Galapagos finches was one of the earliest observations supporting evolutionary theory. The recent identification of ALX1 as the likely gene responsible for these differences was the culmination of a research history that has drawn on several of the Great Ideas in biology. Match each Great Idea to the relevant evidence underlying the discovery of ALX1.
-Life as chemistry

• A) Development of beak shape as a consequence of localized gene expression
• B) Identification of candidate genes for influencing beak shape
• C) Changes in DNA sequence influence phenotype
• D) Observed differences in beak shape

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Definitions:

Ataxic

Referring to ataxia, a neurological sign characterized by impaired balance or coordination, often due to damage to the brain, nerves, or muscles.

Blood Alcohol Level

The concentration of alcohol in an individual's bloodstream, typically measured to assess intoxication for legal or medical purposes.

Disulfiram

A medication used to support the treatment of chronic alcoholism by producing an acute sensitivity to ethanol (drinking alcohol).

Intoxicated

The state of being under the influence of alcohol or drugs, impairing cognitive and physical functions.