NEET BIOLOGY

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CELL STRUCTURES AND FUNCTION

BIO MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If AAGAGG went through DNA replication, the complementary bases would be ____
A
TTCTCC
B
UUCUCC
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The reverse complement of a DNA sequence is formed by reversing the letters, interchanging A and T and interchanging C and G. Thus the reverse complement of ACCTGAG is CTCAGGT. What is a genome?

Detailed explanation-2: -Replication relies on complementary base pairing, that is the principle explained by Chargaff’s rules: adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G).

Detailed explanation-3: -Answer and Explanation: For the sequence 5’-GATTACA-3’, the complementary DNA strand would be 3’-CTAATGT-5’. Often, DNA strands are written in the 5’ to 3’ direction, so the complementary strand would be 5’-TGTAATC-3’ when written 5’ to 3’.

Detailed explanation-4: -The correct option is C The complementary DNA strand of the sequence ATGC will be TACG.

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