The size of a PCR product is mainly determined by the binding location of the PCR primers.

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#Id: 106

#Unit 5. Developmental Biology

Syncytial specification occurs when cell fates are determined in a syncytium of nuclei, as in the

Drosophila blastoderm

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#Id: 8641

#Unit 2. Cellular Organization

Rb binds the activation domains of a E2F transcription factors, in the cytoplasm to prevent them from turning on the genes required for cell cycle progression.

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#Id: 392

#Unit 2. Cellular Organization

The two H2A.H2B dimers each associate with 30 bp of DNA on either side of the central 60 bp of DNA bound by H3 and H4.

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#Id: 7361

#Unit 5. Developmental Biology

On the left side of Hensen’s node, Sonic hedgehog (Shh) activates Cerberus, which stimulates BMPs to induce the expression of Nodal

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#Id: 1329

#Unit 4. Cell Communication and Cell Signaling

Phospholipase C is activated by G proteins containing either Gαo or Gαq.