By Transferring Neural Crest Cells from a Duck to a Quail

question 40

Multiple Choice

By transferring neural crest cells from a duck to a quail and vice versa, Richard Schneider and Jill Helms (2003) demonstrated that

• A) neural crest cells influence the development of beaks.
• B) beaks influence fitness traits.
• C) homeobox genes are conserved across species.
• D) gene duplication causes a difference in beak shape.

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Definitions:

Podular Design

A design concept focusing on creating modules or pods that can function independently or together.

Components

The parts or elements that make up a larger system, product, or structure.

Contract Employee

An individual hired to perform a specific job or task for a designated period, not considered a permanent or long-term employee of the company.

Salaried Employee

An employee who receives a fixed amount of compensation from an employer regularly, typically on a monthly or bi-weekly basis.