Specification of the ectoderm is accomplished during gastrulation, by regulating the levels of BMP.

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#Id: 3010

#Unit 3. Fundamental Processes

A single-stranded DNA-binding protein is required to maintain the separated strands.

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#Id: 2372

#Unit 5. Developmental Biology

 In planarian regeneration, an anterior polarity is dependent on repression of Wnt signaling, & allows head formation.

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#Id: 3523

#Unit 2. Cellular Organization

Pseudogenes arise from the action of an enzyme called reverse transcriptase

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#Id: 7565

#Unit 6. System Physiology – Plant

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#Id: 5638

#Unit 7. System Physiology – Animal

Axons of retinal ganglion cells  Received and transduced information and carried to the CNS