MCQ
‘Saheli’ a new oral contraceptive developed by:
- AAll Indian Institute of Medical Science.
- ✓Central Drug Research Institute.
- CHealth Care $\text{Pvt. Ltd.}$
- DBharat Immunologicals $\&$ Biologicals corp. $\text{Ltd.}$
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$(a)$ Euchromatin is loosely packed chromatin
$(b)$ Heterochromatin is transcriptionally active
$(c)$ Histone octomer is wrapped by negatively charged DNA in nucleosome
$(d)$ Histones are rich in lysine and arginine
$(e)$ A typical nucleosome contains $400\,bp$ of DNA helix
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