Question 1
The two strands of the double helix of DNA are held together by ________.
◦ ionic bonds
◦ dipole-dipole interactions
◦ sugar-to-phosphate bonds
◦ covalent bonds
◦ hydrogen bonds
Question 2
In the synthesis of mRNA, an adenine in the DNA pairs with ________.
◦ uracil
◦ guanine
◦ cytosine
◦ adenine
◦ thymine