AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Write the mRNA for the following DNA:AAA-GGG-TTT
A
TTT-CCC-AAA
B
UUU-CCC-AAA
C
TTT-CCC-UUU
D
UUU-GGG-AAA
Explanation: 

Detailed explanation-1: -The template strand of DNA has AAA sequence, which will be transcribed to mRNA as UUU.

Detailed explanation-2: -DNA utilizes four bases, adenine (A), guanine (G), cytosine (C), and thymine (T), in its code. RNA also uses four bases. However, instead of using ‘T’ as DNA does, it uses uracil (U). Therefore, if your DNA sequence is 3’ T C G T T C A G T 5’, the mRNA sequence would be 5’ A G C A A G U C A 3’.

Detailed explanation-3: -The three-letter nature of codons means that the four nucleotides found in mRNA-A, U, G, and C-can produce a total of 64 different combinations.

There is 1 question to complete.