To modify DNA at a new position requires the action of a de novo methyltransferase, which recognizes DNA by virtue of a specific sequence. It acts only on unmethylated DNA to add a methyl group to one strand.

TLS Online TPP Program

#Id: 4470

#Unit 13. Methods in Biology

Resolution is improved by using shorter wavelengths of light (decreasing the value of λ) or by gathering more light (increasing either N or α).

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#Id: 1575

#Unit 4. Cell Communication and Cell Signaling

Binding of Axin to the phosphorylated LRP protein and to Dishevelled disrupts the Axin–APC–CK1–GSK3–β-catenin complex. 

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#Id: 9157

#Unit 11. Evolution and Behavior

Loop method for inbreeding coefficient

Summation of all possible loop (1/2)ⁿ

TLS Online TPP Program

#Id: 4510

#Unit 13. Methods in Biology

TLS Online TPP Program

#Id: 8645

#Unit 2. Cellular Organization

Rb protein regulation by G1 CDKs in mammalian cells is analogous to Whi5 regulation by Cln3-CDK in yeast.