The absorption of UV light by nucleic acids arises from n ® p* and p ® p* transitions of the purine and pyrimidine bases that occur between 260nm and 275 nm.

TLS Online TPP Program

#Id: 5103

#Unit 6. System Physiology – Plant

Phytochrome interacting factors (PIFs) act as negative regulators of photomorphogenesis.

TLS Online TPP Program

#Id: 7183

#Unit 5. Developmental Biology

Chordin is the one most acutely activated by β-catenin. Like Noggin, Chordin binds directly to BMP4 and BMP2 and prevents their complexing with their receptor

TLS Online TPP Program

#Id: 7328

#Unit 11. Evolution and Behavior

X-linked loci

Allele frequency when genotype frequency is given

TLS Online TPP Program

#Id: 9724

#Unit 6. System Physiology – Plant

Calcium oxalate crystals are present in the vacuoles of many species, and may be distributed evenly throughout the leaf or restricted to specialized cells called idioblasts

TLS Online TPP Program

#Id: 3830

#Unit 5. Developmental Biology

Slug migrates to the top layer of the soil, where it proceeds to build the fruiting structure.