Two REs recognize the same DNA sequence motif but cleave at different positions, then they are called neoschizomers

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#Id: 7612

#Unit 5. Developmental Biology

A second slow block to polyspermy comes from the so-called zinc spark, the release of billions of zinc ions that is induced by the entry of the first sperm These released zinc ions are bind to the zona pellucida

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#Id: 3313

#Unit 6. System Physiology – Plant

Plant Mitochondria Have Alternative Mechanisms, In light the principal source of mitochondrial NADH is a reaction in which glycine, produced by a process known as photorespiration, is converted to serine

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#Id: 2444

#Unit 3. Fundamental Processes

Different terminators require different levels of rho factor for termination and therefore respond differently to the residual levels of rho factor in the mutants (rho mutants are usually leaky).

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#Id: 2751

#Unit 13. Methods in Biology

AFLP uses restriction enzyme-digested genomic DNA as template for PCR amplification using primers that contain the restriction enzyme recognition sites plus a number of, usually 2-3, arbitrary nucleotides.

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#Id: 1449

#Unit 4. Cell Communication and Cell Signaling

Gap junctions permit the passage of molecules as large as 1.2 nm in diameter (molecules smaller than 1200 Da).