RAPD (random amplified polymorphic DNA) refers to a PCR-based technique for identifying genetic variation while RFLP (restriction fragment length polymorphism) refers to a molecular method of genetic analysis, which allows individuals to be identified based on unique patterns of restriction enzyme cutting in specific …
What is RAPD and its application?
As an extension to the variety of existing techniques using polymorphic DNA markers, the Random Amplified Polymorphic DNA (RAPD) technique may be used in molecular ecology to determine taxonomic identity, assess kinship relationships, analyse mixed genome samples, and create specific probes.
What is the difference between AFLP and RFLP?
The key difference between AFLP and RFLP is that AFLP involves selective PCR amplification of the digested DNA while RFLP does not involve selective PCR amplification of the DNA fragments.
What is the difference between AFLP and RAPD?
The AFLP technique is more laborious and time con- suming than RAPD methods but is also more reliable, AFLP being able to detect a large number of polymorphic bands in a single lane rather than high levels of polymor- phism at each locus such as is the case for SSR methods.
What is the difference between PCR and RAPD?
RAPD stands for Random Amplification of Polymorphic DNA. RAPD reactions are PCR reactions, but they amplify segments of DNA which are essentially unknown to the scientist (random). Often, PCR is used to amplify a known sequence of DNA. Thus, PCR leads to the amplification of a particular segment of DNA.
What is needed in RAPD?
RAPD analyses generally require purified, high molecular weight DNA, and precautions are needed to avoid contamination of DNA samples because short random primers are used that are able to amplify DNA fragments in a variety of organisms.
Is AFLP a dominant marker?
AFLP are multilocus markers and their mode of inheritance is dominant. The genotyping technology is rather simple. The main advantages of this system are the relative ease of the genotyping, the relative high number of loci detected in each reaction, and the reliability of the system.
What is The AFLP technique?
The AFLP technique is based on the selective PCR amplification of restriction fragments from a total digest of genomic DNA. After final amplification, selectively amplified fragments are separated by gel electrophoresis and visualized autoradiographically.
5. CHARACTERISTICS OF AFLP – dominant marker. – DNA variation is detected by presence/absence of DNA bands due to: a) presence/absence of restriction sites b) additional bases (insertion) between two restriction sites are too large 6. ADVANTAGES – higher reproducibility compared to RAPD. – highly polymorphic
What is the principle of RAPD?
8. PRINCIPLE OF RAPD RAPD is a PCR based technique for identifying genetic variation. It involves use of single arbitrary primer in a PCR reaction, resulting in amplification of many discrete DNA.
What is The AFLP PCR method?
This method is based on PCR amplification and is a time saving alternative for generating large numbers of polymorphic bands (AFLP markers) on polyacrylamide gels. There are several advantages for AFLP over other DNA markers.
