Heterozygous for inversions also exhibit reduced recombination among genes located in the inverted region.

TLS Online TPP Program

#Id: 2731

#Unit 12. Applied Biology

Bioplastic

Polyhydroxyalkanoates (PHAs), e.g., po1yhydroxybutyrate (PHB), are synthesized from Acetyl co.A used as precursor, and are used for the synthesis of biodegradable plastics with thermoplastic properties. 

At present, PHAs are produced by bacterial fermentation based on Ralstonia eutropha. 

 

 

 

TLS Online TPP Program

#Id: 2732

#Unit 12. Applied Biology

TLS Online TPP Program

#Id: 2733

#Unit 12. Applied Biology

For the generation of transgenic plant in crop improvement, one important regulatory gene ‘X’ was overexpressed in a crop plant. Out of 30 transgenic rice plants generated, 22 showed high levels of gene ‘X’ expression. However, rest 8 lines displayed low level of expression. One explanation of such observation may be: 

Suppression effect of the transgene 

Knock down effect of gene X 

Gene silencing effect 

Co-suppression effect of transgene

 

TLS Online TPP Program

#Id: 2734

#Unit 12. Applied Biology

Cultivation of transgenic plants for the recovery of pharmaceutical compounds (medicines) is popularly known as 'pharming';

TLS Online TPP Program

#Id: 6162

#Unit 12. Applied Biology

TLS Online TPP Program

#Id: 6163

#Unit 12. Applied Biology

Insect-resistant transgenic crops were first commercialized in the mid-1990s with the introduction of GM corn (maize), potato and cotton plants expressing genes encoding the entomocidal δ-endotoxin from Bacillus thuringiensis.