The SKN-1 protein is a maternally expressed transcription factor that controls the fate of the P1 blastomere(P1🡪EMS 🡪MS), that generates the posterior pharynx.

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#Id: 2633

#Unit 13. Methods in Biology

The probe must span the sequence where the transcript starts or ends. After hybridizing the probe to the transcript, one applies S1 nuclease, which degrades only single-stranded DNA and RNA. 

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#Id: 1832

#Unit 11. Evolution and Behavior

Devonian- First amphibian and first seed plant appear

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#Id: 9574

#Unit 11. Evolution and Behavior

Eon –  The longest portions of geologic time.

Hadeon, Archean, Proterozoic, and Phanerozoic.

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#Id: 1563

#Unit 4. Cell Communication and Cell Signaling

This is the example of post-translational modification by a lipid that mediates a ligand-receptor interaction.

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#Id: 6070

#Unit 10. Ecological Principles