diphenylamine binds with the deoxyribose molecule to form a blue complex
When adding diphenylamine to deoxyribose you will get a dark deep purple color. If you react diphenylamine with crude DNA you will get a pink-violet color. DIphenylamine test is quantitative and the darker the color the greater the concentration of DNA in the solution
in DNA estimation by diphenylamine method, standard calf thymus DNA is digested by perchloric acid, but unkown is not digested by perchloric acid, rather rest protocol of diluting with water and treating with diphenylamine and checking aborbance reamins same can anybody say the reason?
yes
No the blood test will determine the DNA of the mother not the DNA of the baby
In Hyderabad, OTS & Services (DNA Test India)
When adding diphenylamine to deoxyribose you will get a dark deep purple color. If you react diphenylamine with crude DNA you will get a pink-violet color. DIphenylamine test is quantitative and the darker the color the greater the concentration of DNA in the solution
Diphenylamine is a reagent for DNA.
One major difference between DNA and RNA is their sugar: DNA contains deoxyribose, whereas RNA contains ribose. This is what isdiphenylamine testfor deoxyribose for. In this process, the reaction between the Dische reagent and 2-deoxypentose results in the development of a blue color. The reaction depends on the conversion of the pentose to w-hydroxylaevulinic aldehyde which then reacts with diphenylamine to give a a blue colored complex. The intensity of the blue color is proportional to the concentration of DNA. Dische reagent does not react with the ribose sugar in RNA and does not form a blue-colored complex.Dische diphenylamine test-- A chemical test utilized to detect the presence of DNA in a substance.Mudit Mishra
diphenylamine reagent
DNA
DNA
in DNA estimation by diphenylamine method, standard calf thymus DNA is digested by perchloric acid, but unkown is not digested by perchloric acid, rather rest protocol of diluting with water and treating with diphenylamine and checking aborbance reamins same can anybody say the reason?
That's a DNA test, it will only be negative if you are not the parent.
Diphenyle amine reacts with DNA and liberates inorganic ortho phoshate of Dna. amine group of diphenylamine is combined with DNA before the phosphate group is released from the sugar. By this action DNA solution gets dark blue color which was estimated by using spectrophotometer.
Only a dna test can determine.
If you don't trust the mother a DNA test is the only way I guess. The child can also look like you.
if someone had taken a DNA test when a child was about 6 months old only to find out that he was the Dad 4 years later. Is this possible or should he get another DNA test done?