DNA sequence has on one sequence ATTAGACA . How many hydrogen bonds would form between this sequence and its complementary strand in a double h

18  >> ATTAGACA: 2+2+2+2+3+2+3+2 = 18 H-bonds

Explanation:

Adenine (A) pairs with Thymine (T) through two hydrogen bonds (A=T), whereas Cytosine (C) pairs with Guanine (G) through three hydrogen bonds (G=C). In consequence, the bond between C and G (G=C) is more stable. In this case, six (6) A=T pairs and two (2) G=C pairs are formed, thereby the number of H-bonds is equal to (6 x 2) + (2 x 3) = 18.

b - the respond is innate and varies over time.

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