Crassulacean acid metabolism (CAM). Temporal separation of CO2 uptake from photosynthetic reactions: CO2 uptake and fixation take place at night, and decarboxylation and refixation of the internally released CO2 occur during the day. The adaptive advantage of CAM is the reduction of water loss by transpiration, achieved by the stomatal opening during the night.

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#Id: 987

#Unit 5. Developmental Biology

In Drosophila, mid-blastula transition slowdown of nuclear division, cellularization, and concomitant increase in new RNA transcription

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#Id: 988

#Unit 5. Developmental Biology

The transition from specification to determination in Drosophila is mediated by Segmentation genes.

TLS Online TPP Program

#Id: 989

#Unit 5. Developmental Biology

First zygotic genes is Gap genes. Mutations in them cause gaps in the segmentation pattern.

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#Id: 990

#Unit 5. Developmental Biology

Gurken protein is a member of the EGF (epidermal growth factor) family, and Torpedo encodes a homologue of the vertebrate EGF receptor.

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#Id: 991

#Unit 5. Developmental Biology

An anterior-to-posterior gradient of Bicoid protein.

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#Id: 992

#Unit 5. Developmental Biology

Bicoid act as the anterior morphogen.