Hox Genes Appear to Be Influential in Developing the

question 19

Multiple Choice

Hox genes appear to be influential in developing the

• A) entire brain.
• B) hindbrain,but not the midbrain or forebrain.
• C) hindbrain and midbrain,but not the forebrain.
• D) spinal cord,but not the brain.

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Definitions:

(R)-2-Butyl Tosylate

A chiral organic compound where a butyl group is attached to a para-toluene sulfonate, used as an intermediate in organic synthesis.

Sodium Iodide

A salt with the formula NaI, used in organic synthesis, and as a dietary supplement.

TsCl

P-toluenesulfonyl chloride, an organic compound used as a reagent in organic synthesis to introduce tosyl groups.

(R)-Pentan-2-Ol

An optically active form of pentanol where the hydroxyl group is attached to the second carbon atom in the pentane chain.