Live, Attenuated Vaccines Microorganisms can be attenuated or disabled so that they lose their ability to cause significant disease but retain their capacity for transient growth within an inoculated host.

TLS Online TPP Program

#Id: 3207

#Unit 3. Fundamental Processes

Deamination of cytosine creates a U-G base pair. Uracil is preferentially removed from the mismatched pair

TLS Online TPP Program

#Id: 3215

#Unit 3. Fundamental Processes

Ultraviolet irradiation causes dimer formation between adjacent thymines. The dimer blocks replication and transcription. 

TLS Online TPP Program

#Id: 3217

#Unit 3. Fundamental Processes

The Uvr system makes incisions -12 bases apart on both sides of damaged DNA, removes the DNA between them, and resynthesizes new DNA.

TLS Online TPP Program

#Id: 3219

#Unit 3. Fundamental Processes

Transcribed genes are preferentially repaired when DNA damage occurs.

TLS Online TPP Program

#Id: 3222

#Unit 3. Fundamental Processes

Transcribed genes are preferentially repaired when DNA damage occurs.

TLS Online TPP Program

#Id: 3224

#Unit 3. Fundamental Processes

Xeroderma pigmentosum (XP) is a human disease caused by mutations in any one of several nucleotide excision repair genes.