AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the correct DNA complementary base to AAT CGT TAC
A
AAT GCA TAC
B
TTA CGT ATG
C
TTA GCA ATG
D
UUA GCA AUG
Explanation: 

Detailed explanation-1: -Based on complementary base pairing rules, T pairs with A, whereas C pairs with G. Hence, the complementary sequence for 3’ ATGGCT 5’ starting from the 5’ end is 5’ TACCGA 3’.

Detailed explanation-2: -In the complementary strand of DNA, the bases that bind to TAC are complimentary, thus they are ATG.

Detailed explanation-3: -Complementary sequence: Nucleic acid sequence of bases that can form a double-stranded structure by matching base pairs. For example, the complementary sequence to C-A-T-G (where each letter stands for one of the bases in DNA) is G-T-A-C.

Detailed explanation-4: -Solution : (c) Adenine always pairs with thymine and cytosine always pairs with guanine. Thus, sequence of bases on complementary strand would be TACGTACGT.

There is 1 question to complete.