MCQ
Theory of natural selection dwells on:
- ARole of environment in evolution.
- BNatural selection acting on favourable variations.
- CChanges in gene complex resulting in heritable variations.
- DNone of the above.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A$ : Amniocentesis for sex determination is one of the strategies of Reproductive and Child Health Care Programme.
Reason $R$ : Ban on amniocentesis checks increasing menace of female foeticide.
In the light of the above statements, choose the correct answer from the options given below.


$R$ : This intercalating agent absorbs light in range $260 -330 \;nm.$