(MARs) also called scaffold attachment regions (SARs), or S/MARs in case of metaphase chromosome as the same sequences appear to attach to the protein substructure in both metaphase and interphase cells.

TLS Online TPP Program

#Id: 627

#Unit 2. Cellular Organization

RNA Polymerase don’t get dissociated with one hairpin which is 2:3 

TLS Online TPP Program

#Id: 628

#Unit 2. Cellular Organization

Transcription is initiated at the beginning of the 162 nucleotide mRNA leader encoded by a DNA region called trpL.

TLS Online TPP Program

#Id: 3501

#Unit 2. Cellular Organization

Interrupted genes are longer than its mature RNA product because of the presence of the introns hence Length of precursor RNA (not mRNA) defines region of gene

TLS Online TPP Program

#Id: 3502

#Unit 2. Cellular Organization

Interrupted gene: Mutations in exons can affect polypeptide sequence; mutations in introns can affect RNA processing and hence may influence the sequence and/or production of a polypeptide.

TLS Online TPP Program

#Id: 3503

#Unit 2. Cellular Organization

Single-base substitutions at the junctions between introns and exons causes an exon to be left out of the product or an intron to be included, or make splicing occur at a different site.

TLS Online TPP Program

#Id: 3504

#Unit 2. Cellular Organization

In multicellular eukaryotes most genes are interrupted, and the introns are usually much longer than exons, so genes are considerably larger than their coding regions.