MCQ
Geometric representation of age structure is a characteristic of
- ✓population
- Blandscape
- Cecosystem
- Dbiotic community.
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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
Choose the correct answer from the options given below:
Match the following:
| Column – I | Column $- II$ |
| $(1)$ Failure of cytokinesis | $(p)$ To study in beritance of particular traits |
| $(2)$ Trisomy of 21 | $(q)$ Polyploidy |
| $(3)$ Error of metabolism | $(r)$ Down's syndrome |
| $(4)$ Pedigree analysis | $(s)$ Phenylketonuria |