Thymine dimers cause mutations in two ways. (1) Dimers perturb the structure of DNA double helices and interfere with accurate DNA replication. (2) Errors occur during the cellular processes that repair defects in DNA, such as UV-induced thymine dimers To identify chemicals that are converted into mutagens in the liver, the Ames test treats potential indirect mutagens with a mixture of liver extract

TLS Online TPP Program

#Id: 3738

#Unit 10. Ecological Principles

Community Similarity

TLS Online TPP Program

#Id: 4660

#Unit 13. Methods in Biology

Normal cells treated with sodium chromate allowed to absorb and induced to death signals as T-CTLs Death of the target cells is indicated by the release of 51Cr into the supernatant

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#Id: 166

#Unit 5. Developmental Biology

Foregut endoderm and cardiac mesoderm cause the synthesis of the Otx2 transcription factor in the head ectoderm during the late gastrula stage

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#Id: 10549

#Unit 4. Cell Communication and Cell Signaling

Extrinsic apoptosis pathway, is initiated by ligands of death receptor family TNFα and FasL (trimeric ligand)

TLS Online TPP Program

#Id: 2875

#Unit 13. Methods in Biology

According to the Beer–Lambert law, absorbance is linearly proportional to the concentration of chromophores.