MCQ
During ventricular diastole
- AThe auricles relax
- BThe heart contracts
- CThe heart pumps blood
- ✓The ventricles relax
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$II.$ 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