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Class 12th CBSE 2015 Biology Paper Set 3

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Class-12th CBSE
Subject-Biology Set 3
year-2015      

Here is some questions:-
SECTION – A

1. Name the transcriptionally active region of chromatin in a nucleus.  
SECTION – B
1. Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
SECTION – C
1. Describe the process of Parturition in humans.
SECTION – D
1. Since October 02, 2014 “Swachh Bharat Abhiyan” has been launched in our country.  (a) Write your views on this initiative giving justification.  
SECTION – E
1. Explain the genetic basis of blood grouping in human population.

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