Restriction endonuclease, Biology

Assignment Help:

Suppose the restriction endonuclease HindIII cuts a6.0 kb linear piece of DNA into two fragments; an 800 bp fragment and a 5200 bp fragment.....

Question:Suppose restriction endonuclease HindIII cuts a6.0 kb linear piece of DNA into two fragments; an 800 bp fragment and a 5200 bp fragment. NarI cuts DNA also into two fragments; fragments 1200 and 4800 bp long. Relative to HindIII cut site, there are two probable ways in which NarIcould have cut DNA. How can you determine correct cleavage site for NarI with respect to HindIII?

Answer

To determine this, one should subject DNA to a double digest in which both enzymes are allowed to cut DNA at the same time. When double digest is allowed to take place, if three fragments which appear upon electrophoresis of the restricted DNAare 400, 800 and 4800 bp, then the only possible way in which data can be interpreted is with 1200 bp NarI fragment containing the HindIII recognition site 800 bp from the end of linear piece of DNA. If 4800 bp NarI fragment contained the cut site, you would visualize fragments of sizes 800, 1200, and 4000 bp after electrophoresing the doubly digested DNA.


Related Discussions:- Restriction endonuclease

How does the depolarization of the neuronal membrane start, Q. How does the...

Q. How does the depolarization of the neuronal membrane start? The primary cause of the neuronal depolarization is the binding of neurotransmitters released in the synapse by t

Arboriculture, Arboriculture : It deals with the cultivation of ornamental ...

Arboriculture : It deals with the cultivation of ornamental plants. Arboriculture is the cultivation, management or study of individual shrubs, trees, vines, or other perennial woo

Into which two groups can the nitrogen-containing bases, Into which two gro...

Into which two groups can the nitrogen-containing bases that form DNA and RNA be classified? What is the criterion used in that classification? The nitrogen-containing bases th

What is the carbon cycle, What is the carbon cycle? The carbon cycle sh...

What is the carbon cycle? The carbon cycle shows the circulation and recycling of the chemical element carbon in nature as a result of the action of living beings. Photosynt

Domestication and cultivation of ornamental plants, As with food crops, the...

As with food crops, the "discovery, domestication and cultivation" of ornamental plants have a long history. There is  indication that lilies were cultivated in China for both medi

Why in some cases is mitosis a synonym of reproduction, Why in some cases i...

Why in some cases is mitosis a synonym of reproduction? In some living beings asexual reproduction happens by many means: binary division, schizogony, budding, grafting, etc. I

Rational in individual patient, Thiazide diuretics have been accepted as th...

Thiazide diuretics have been accepted as the primary foundation of antihypertensive therapy. The basis of this choice is that, apart from their primary hypotensive effect, they enh

Explain changes in gluten proteins during dough formation, Changes  In Glu...

Changes  In Gluten Proteins During Dough Formation Initially, gluten is formed when flour and water are mixed together. The proteins in the flour, glutenin and gliadin cross  l

Homo habilis, Two important human fossils that throw much light on the huma...

Two important human fossils that throw much light on the human ancestory were discovered in .Olduvai beds in Africa and in central Java respectively. Although the development of bi

Are all pneumonias caused by bacteria, Q. Are all pneumonias caused by bact...

Q. Are all pneumonias caused by bacteria? The Pneumonia is the generic name of inflammation of the lungs. Moreover bacterial pneumonias, there are pneumonias caused by fungi, v

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd