Advertisements
Advertisements
Question
How does restriction endonuclease function?
Solution
Each restriction endonuclease finds its specific palindromic nucleotide sequences in the DNA and cuts the DNA at these specific sites. It does so by binding to the DNA at these sites and cutting both the strands at specific points in their sugar-phosphate backbones.
APPEARS IN
RELATED QUESTIONS
Why is the enzyme cellulase needed for isolating genetic material from plant cells and not form the animal cells?
Name and describe the technique that helps in separating the DNA fragments formed by the use of restriction endonuclease
Explain the roles of the following with the help of an example each in recombinant DNA technology :
Restriction Enzymes
Restriction enzymes ______.
'Restriction' in restriction enzyme refers to
Which of the following enzymes catalyse the removal of nucleotides from the ends of DNA?
Carefully observe the given picture. A mixture of DNA with fragments ranging from 200 base pairs to 2500 base pairs was electrophoresed on agarose gel with the following arrangement.
(a) What result will be obtained on staining with ethidium bromide? Explain with reason.
(b) The above setup was modified and a band with 250 base pairs was obtained at X.
What change(s) were made to the previous design to obtain a band at X? Why did the band appear at position X?
Given below is the stepwise schematic representation of the process of electrophoresis. Identify the 'alphabets' representing
- Anode end
- smallest/lightest DNA strand in the matrix
- Agarose gel
State the importance of elution in this process.
State the principle involved in separation of DNA fragments using gel electrophoresis.
