Question

This arrangement _____. Within a double-stranded DNA molecule, adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine. This arrangement _____. allows variable width of the double helix permits complementary base pairing determines the tertiary structure of a DNA molecule determines the type of protein produced

Answer 1

Answer:

The correct answer will be option- permits complementary base pairing

Explanation:

DNA contains four types of nitrogenous bases which pair with one another,  identified by Erwin Chargaff.  

Chargaff suggested that adenine binds thymine forming two hydrogen bonds and cytosine binds guanine forming three hydrogen bonds.

This base pairing between the complementary groups is known as a complementary base pairing which plays an important role in DNA.

The complementary base pairing allows the formation of the helical structure of DNA, the base pairs to be arranged in most energetically and favourable way and replication and transcription processes.

Thus, permits complementary base pairing is the correct answer.