The Engrailed (En) Gene Is an Example of A(n)

question 58

Multiple Choice

The Engrailed (En) gene is an example of a(n)

• A) paralog; it is crucial for defining the posterior portion of the limb bud in mice and for defining the leg disc in flies.
• B) ortholog; it is crucial for defining the posterior portion of the limb bud in mice and for defining the leg disc in flies.
• C) paralog; it is a homologous gene produced by gene duplication within the fly limb development pathway.
• D) ortholog; it is a homologous gene produced by gene duplication within the fly limb development pathway.

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