MCQ
Sickle cell anaemia is due to
- AHormones
- BViruses
- ✓Genes
- DBacteria
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Label $A, B$ and $C$
$II.$ Inheritance of acquired characters
$III.$ Branching descent
$IV.$ Natural selection
$V.$ Mutation
$VI.$ Reproductive isolation
The two key concepts of Darwinism from the given options are
