Animals use behavior to survive in cold temperatures

Curling up into a ball to reduce the exposed surface area. 

Penguins may huddle together to conserve heat. 

Bears hibernate, spending the winter in a deep sleep.

TLS Online TPP Program

#Id: 998

#Unit 5. Developmental Biology

The homologue of β-catenin in Drosophila is Armadillo.

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#Id: 999

#Unit 5. Developmental Biology

The homologue of TGF-β in Drosophila is Dpp.

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#Id: 1000

#Unit 5. Developmental Biology

Two regions of Drosophila chromosome III contain most of homeotic genes

Antennapedia complex

Bithorax complex

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#Id: 1001

#Unit 5. Developmental Biology

Antennapedia(Antp), which is required for the identity of the second thoracic segment.

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#Id: 1002

#Unit 5. Developmental Biology

Ultrabithorax (Ubx), is required for the identity of the third thoracic segment.

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#Id: 1003

#Unit 5. Developmental Biology

Homothorax gene encode transcription factors that are critical for antenna formation.