Impaired function of a membrane- bound calcium transporter

Loss-of-function mutant in a membrane-located sodium transporter

Dysregulation of a membrane chloride transporter

CAG repeats in a membrane bound calcium transporter

Human Huntingtin with excess CAG repeats

A mouse Huntingtin gene with typical CAG repeats

A mouse Huntingtin gene with excess CAG repeats

Mouse Huntingtin gene controlled by the human Huntingtin regulatory region

Autosomal dominant

Sex-linked

Autosomal recessive

Maternal

C.

B.

A.

D.

The number of neural crest cells that migrate to the face.

Species-specific neural crest information.

The amount of chocolate that a bird can eat in 60 minutes.

Endogenous Noggin expression in migrating neural crest cells

In the fusing palatal shelves

In the primary palate

In the nuclei of secondary palate cells

Not in the secondary palate

Tongue

precursor tissue before fusion.

The left upper

mandible.

The forming secondary palate.