On the right side of the embryo, activin is expressed, along with activin receptor IIa. This activates Fgf8, a protein that blocks expression of the gene for Cerberus.

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#Id: 3706

#Unit 2. Cellular Organization

When a genome contains a cluster of genes with related sequences, mispairing between nonallelic loci can cause unequal crossing over. This produces a deletion in one recombinant chromosome and a corresponding duplication in the other.

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#Id: 2862

#Unit 13. Methods in Biology

RNA gives absorbance at 595 nm in presence of Diphenylamine while gives direct absorbance at 540 nm.

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#Id: 2621

#Unit 13. Methods in Biology

Examples of restriction endonuclease nomenclature.

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#Id: 1928

#Unit 4. Cell Communication and Cell Signaling

Alternative pathway

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#Id: 9871

#Unit 6. System Physiology – Plant

The UVR8- COP1-SPA complex then activates the transcription of the major transcription factor HY5, which controls the expression of many of the genes induced by UV-B.