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How we can determine the ladder we can use in DNA identification?

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Question added by Deleted user
Date Posted: 2014/04/02
Noha El Badawy
by Noha El Badawy , باحث و نائب مدير المعمل المركزى للتقنيات الحيوية , وزارة الزراعة المصرية_ مركز البحوث الزراعية_ المعمل المركزى للتقنيات الحيوية

according to the expected size of the fragment that we will obtain and the total size of the organism's genome

it' ranges from100bp to1 kbp 

PBS Kumar P
by PBS Kumar P , Clinical Resource Consultant , Becton Dickinson

what range you are expecting will  depends on  your sample.  I guess min50bp to max10kb range of markers available.

Bilal Alkhizzi
by Bilal Alkhizzi , Administrative Manager , Itqan Medical Center

It really depends on the expected size of your fragment. If you were unsure, maybe run more than one gel. There are ladders of different sizes, e.g.- bp,0.5- kb, etc.

 

Also, some ladders have bands of different masses that are reflected by the intensity of the bands. This enables one to estimate how many grams are present in each band present on the gel.

diala kantar
by diala kantar , PhD student , Institut de Recherche en Cancérologie de Montpellier

it depends on the size of the DNA fragment that you will obtain. normally you have to know the fragment size of DNA that you will obtain 

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