NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

VIRUSES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the correct complimentary strand for the following DNA? ATCGAG
A
TACGAG
B
ATCGAG
C
TAGCTG
D
TAGCTC
Explanation: 

Detailed explanation-1: -The correct option is C The complementary DNA strand of the sequence ATGC will be TACG. The complementary base pairing in DNA is as per the Chargaff’s rules.

Detailed explanation-2: -The upper strand of DNA is the “mRNA-like” strand. The lower strand is the strand that is complementary to the mRNA.

Detailed explanation-3: -Solution : (c) Adenine always pairs with thymine and cytosine always pairs with guanine. Thus, sequence of bases on complementary strand would be TACGTACGT.

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