"Notice for +2 final exam appeared students"

First of all; Warm wishes and welcome to the journey of entrance preparation. We are here to help you in your every step of this journey.

Notice
We are going to conduct topicwise test every week very soon. This test will be based on the new syllabus of AFU and TU entrance exam.
Specially on the demand of many students, we are conducting this test free of cost. So stay tuned with us and regularly check this website for further information.

Most important facts about DNA, Histone protein and Chromosome

­čś▓Special features on number of chromosomes 


Highest number of chromosomes:-
In plant :- Ophioglossum reticulum (2n=1262)
In animal :- Aulochantha (2n=1600)

Lowest no. of chromosomes:- 
In plants :- Haplopappus gracilis (2n=4)
In animal :- Ascaris melanocephala (2n=2)

Important fact and relationship between DNA, Histone protein and Chromosome.

➡DNA is acidic in Nature. 
((@ DNA= Deoxyriboneucleic acid.
so it is easy to remember acidic nature of DNA.))
➡Histone protein is basic in Nature. 
➡Due to the balance between acidic DNA and basic Histone protein, chromosome overall become neutral. Since, DNA and histone protein binds together and coiled to form chromosome. 
➡It can be further clarified from this image.






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