Question

For the DNA sequence 5'-GCCTAT-3' in one polynucleotide chain, the sequence found in the other polynucleotide chain is

a. 3'-CGGATA-5'
b. 3'-GCCATA-5'
c. 3'-CGGAUA-5'
d. 3'-ATTCGC-5'

Answer 1

The complementary DNA sequence to 5'-GCCTAT-3' is 3'-CGGATA-5', as DNA strands are complementary and antiparallel with specific base pairing.

Therefore , the correct answer options is b)

Step-by-step explanation:

For the DNA sequence 5'-GCCTAT-3' in one polynucleotide chain, the sequence found in the other polynucleotide chain is 3'-CGGATA-5'. DNA strands are complementary and antiparallel, meaning they run in opposite directions.

The bases pair specifically where adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C). Therefore, the complementary sequence to 5'-GCCTAT-3' would be 3'-CGGATA-5', matching each base with its complement.