A unique electrogenic K + pump in the stria vascularis accounts for the fact that the scala media is electrically positive by 85 mV relative to the scala vestibuli

and scala tympani

 

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#Id: 993

#Unit 5. Developmental Biology

An anterior-to-posterior gradient of Hunchback protein.

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#Id: 994

#Unit 5. Developmental Biology

A posterior-to-anterior gradient of Nanos protein.

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#Id: 995

#Unit 5. Developmental Biology

A posterior-to-anterior gradient of Caudal protein.

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#Id: 996

#Unit 5. Developmental Biology

The inhibition of Oskar translation is mediated by two proteins-

1.) Bruno

2.) Cup

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#Id: 997

#Unit 5. Developmental Biology

The segment polarity genes encode proteins that are constituents of the Wnt and Hedgehog signaling pathways.

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#Id: 998

#Unit 5. Developmental Biology

The homologue of β-catenin in Drosophila is Armadillo.