MCQ
Point mutation arises due to change in
- ASingle base of $RNA$
- ✓Single base pair of $DNA$
- CEntire Functional Segment of $DNA$
- DNone of these

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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
Reason : Flower colour gene shows incomplete dominance.
$I$. Gastrin $II$. Secretin $III$. Cholecystokinin $IV.ACTH$ $V. MSH$ $VI. GIP$
The correct option is