Question
Biology Question on biotechnology
Upon exposure to UV radiation, DNA stained with ethidium bromide will show
A
Bright blue colour
B
Bright yellow colour
C
Bright orange colour
D
Bright red colour
Answer
Bright orange colour
Explanation
Solution
Ethidium bromide intercalates into the DNA double helix and becomes fluorescent under UV light. The emitted fluorescence appears as a bright orange color, not red, blue, or yellow.
Therefore, The correct option is (C): Bright orange colour