Since the DNA is formed by two paired strands of nucleotides , and the nucleotides always pair in the same way ( Adenine ( A ) with Thymine ( T ) , Cytosine ( C ) with Guanine ( G ) ) , a ( single-stranded ) sequence of DNA is said to be a palindrome if it is equal to its complementary sequence read backward .
SCONJ DET PROPN AUX VERB ADP NUM VERB NOUN ADP NOUN , CCONJ DET NOUN ADV VERB ADP DET ADJ NOUN ( PROPN ( NOUN ) ADP PROPN ( PROPN ) , PROPN ( PROPN ) ADP PROPN ( PROPN ) ) , DET ( ADJ ) NOUN ADP PROPN AUX VERB PART VERB DET NOUN SCONJ PRON VERB ADJ ADP PRON ADJ NOUN VERB ADV .