Question

Which of the following DNA molecules is the most stable?
a. CTGCATAC
GACGTATG
b. GAAATTTC
CTTTAAAG
c. AGTCGAAT
TCAGCTTA
d. GCGTGCAC
CGCACGTG
e. GGATCCTG
CCTAGGAC

Answer 1

Answer:

E

Explanation:

There are no genetic mistakes.

C bonds with G

A bonds with T

G and C cannot bond with A and T

A and T cannot bond with G and C

The same bonds cannot bond together (example. A-A or G-G)

Hope it helps you!

Answer 2

The most stable DNA molecule is D. GCGTGCAC

                                                             CGCACGTG

DNA is a polymer composed of nucleotides, that is, a polynucleotide. Each of the nucleotides it has is made up of:

• Deoxyribose
• A nitrogenous base
• Phosphate group

Nitrogen bases can be the following:

• Adenine → A
• Thymine → T
• Cytosine → C
• Guanine → G

Between these bases, they bind to form DNA, the bases of Cytosine bind to those of Guanine and those of Adenine to those of Thymine.

The bond between the Guanine and Cytosine bases has three hydrogen bonds and the bond between the Adenine and Thymine bases has two hydrogen bonds. When a molecule has a greater number of C - G bonds than A - T, it has a greater number of hydrogen bonds, which makes it more stable.

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