MCQ
Succession showing changes in communities at a place is called:
- AGeographical succession
- ✓Biotic succession
- CPhysiographic succession
- DClimate succession
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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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