Question

For a DNA strand that contains the sequence AGT in the 5″ to 3″ direction, what nucleotides are found on the other DNA strand in the 5″ to 3″ direction? A. TCA B. ACT C. GTA D. TGA

Answer 1

A. TCA

Step-by-step explanation:

Deoxyribonucleic acid, DNA, is a nucleic acid molecule composed of two long chains of polynucleotide. Each chain, which is called a STRAND, is made up of nucleotide chains joined together. However, one strand of DNA joins to the other via hydrogen bond using the complementary base pairing rule.

Complementary base pairing rule, as postulated by Chargaff, states that an Adenine base will always bind to a Thymine base while Cytosine will always bind to a Guanine base i.e. A-T, G-C. Hence, in a DNA strand that contains the sequence AGT in the 5″ to 3″ direction, the other strand in the 3' - 5' direction will contain the sequence TCA.