The Andes Mountains Tropical Hotspot is the world's most diverse hotspot Philippines More than 7,100 islands fall within the borders of the Philippines hotspot, identified as one of the world’s biologically richest countries

TLS Online TPP Program

#Id: 3205

#Unit 3. Fundamental Processes

.All these systems are prone to introducing errors during the repair process. 

TLS Online TPP Program

#Id: 3206

#Unit 3. Fundamental Processes

Photoreactivation is a nonmutagenic repair system that acts specifically on pyrimidine dimers

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.