5-hydroxymethylcytosine (5hmC) is now novel epigenetic marks. The “teneleven traProteins that normally recognize 5mC, such as MeCP2, do not bind to 5hmC, suggesting that generation of 5hmC might serve to reverse methylation-dependent silencing.

TLS Online TPP Program

#Id: 474

#Unit 2. Cellular Organization

Mutations conferring antibiotic resistance in bacteria or venom-resistance of pray is example of positive selection of mutation in exons

TLS Online TPP Program

#Id: 475

#Unit 2. Cellular Organization

Positive selection in pray population leads to an “arm’s race” with predator (Host-pathogen same).

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.