Overexpressing a Single Isoform of Dscam in a Small Subset

question 11

Multiple Choice

Overexpressing a single isoform of Dscam in a small subset of projection neurons shifted their dendrites to a neighboring glomerulus. Unexpectedly, the axons of their partner (wild-type) ORNs also shifted to the new glomerulus. Thus, Dscam appears to play a similar role to that of:

• A) Sema1A.
• B) Sema2B.
• C) Ten-a or Ten-m.
• D) Caps.
• E) None of the above

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Definitions:

Protons

Positively charged subatomic particles found in the nucleus of an atom.

Amu

Atomic Mass Unit, a unit of mass used to express atomic and molecular weights, equivalent to one twelfth of the mass of a carbon-12 atom.

Valence Shells

The outermost shell of electrons in an atom, which determines how the atom interacts chemically with other atoms.

Electrical Charge

A physical property of matter that causes it to experience a force when placed in an electromagnetic field, typically measured in coulombs.