Upon absorbing UV-B photons, the tryptophans undergo structural changes that break the salt bridges, leading to the dissociation of the two functionally active monomers. The monomers then interact with COP1–SPA complexes to activate gene expression

TLS Online TPP Program

#Id: 476

#Unit 2. Cellular Organization

Two genes may share some related exons but also have unique exons. 

TLS Online TPP Program

#Id: 477

#Unit 2. Cellular Organization

A gene family is defined as a group of genes that encode related or identical products as a result of gene-duplication events.

TLS Online TPP Program

#Id: 478

#Unit 2. Cellular Organization

Genes that are more distantly related but that still can be recognized as having common ancestry. Such a group of gene families is called a superfamily.

TLS Online TPP Program

#Id: 479

#Unit 2. Cellular Organization

Eukaryotic chromosome normally visualised in Interphase and metaphase/mitotic phases.

TLS Online TPP Program

#Id: 480

#Unit 2. Cellular Organization

Interphase chromatin is a mass occupying a large part of the nuclear volume

TLS Online TPP Program

#Id: 481

#Unit 2. Cellular Organization

Mitotic chromosomes are highly organized and reproducible ultrastructure