Algae, Tree, Herbs, Bush, Shrub, Grasses, Vines, Fern, Moss, Spermatophyta, Bryophyta, Fern Ally, Flower, Photosynthesis, Eukaryote, Prokaryote, carbohydrate, vitamins, amino acids, botany, lipids, proteins, cell, cell wall, biotechnology, metabolities, enzymes, agriculture, horticulture, agronomy, bryology, plaleobotany, phytochemistry, enthnobotany, anatomy, ecology, plant breeding, ecology, genetics, chlorophyll, chloroplast, gymnosperms, sporophytes, spores, seed, pollination, pollen, agriculture, horticulture, taxanomy, fungi, molecular biology, biochemistry, bioinfomatics, microbiology, fertilizers, insecticides, pesticides, herbicides, plant growth regulators, medicinal plants, herbal medicines, chemistry, cytogenetics, bryology, ethnobotany, plant pathology, methodolgy, research institutes, scientific journals, companies, farmer, scientists, plant nutrition
Select Language:
Main Menu
Please click the main subject to get the list of sub-categories
Services offered
  Section: Genetics » Plasmids, IS Elements, Transposons and Retroelements
Please share with your friends:  

Transposons and controlling elements

Plasmids, IS Elements, Transposons and Retroelements
Classification of plasmids
Replication, transfer and recombination in plasmids
Insertion sequences or IS elements
Transposons and controlling elements
Transposons in prokaryotes
Transposons in eukaryotes
Retrolelements (viral and non-viral)
Mechanism of Transposition
Uses of Transposons

Transposons and Controlling Elements (Mediated via DNA)
In the previous section, we described insertion sequences, which are capable of moving within the genome through illegitimate recombination (moving to DNA sequences quite unrelated). In this section, we describe additional extrachromosomal elements, which are transposable and can occupy different sites on the main DNA molecule of plasmid or bacterial chromosome. These elements are popularly described as transposons, both in prokaryotes and eukaryotes. However, in maize these were initially described as controlling elements, due to their control on the expression of genes. The relationship between plasmid, IS elements and transposons (Tn) is shown in Figure 15.4.
The insertion of a transposon (Tn), including IS elements, into a plasmid (RTF = resistance-transfer factor).
Fig. 15.4. The insertion of a transposon (Tn), including IS elements, into a plasmid (RTF = resistance-transfer factor).


Copyrights 2012 © | Disclaimer