During human chromosome rearrangements deletion onto the chromosome 4 in the short arm causes Wolf–Hirschhorn syndrome.

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#Id: 7370

#Unit 5. Developmental Biology

Gap genes encode transcription factors, and differing combinations and concentrations of gap gene proteins regulate the transcription of pair-rule genes, which divide the embryo into periodic units.

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#Id: 6759

#Unit 3. Fundamental Processes

PNPase a 3’ to 5’ exonucleases in E. coli, are unable to progress through double-stranded regions. Thus, the stem-loop structure at the 3’ end of many bacterial mRNAs protects the mRNA from direct 3’ attack.

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#Unit 3. Fundamental Processes

Replacement of Pyrimidine to Purine or vice versa is called Transversion.

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#Id: 6868

#Unit 3. Fundamental Processes

Methylation of H3K9 demarcates heterochromatin while H3K4 methylation demarcates euchromatin.

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#Id: 7476

#Unit 4. Cell Communication and Cell Signaling

Antibody Light Chains

Light chain was extremely variable, whereas the sequence of the carboxyl-terminal half could be classified into one of two major sequence types.

κ (kappa) 

λ (lambda)