Question

Thymine and cytosine differ from adenine and guanine in that
a) thymine and cytosine are only found in DNA, whereas adenine and guanine are only found in RNA.
b) thymine and cytosine are single-ring structures, whereas adenine and guanine are double-ring structures.
c) thymine and cytosine are only found in DNA, whereas adenine and guanine are found in both DNA and RNA.
d) thymine and cytosine are larger nitrogenous bases.

Answer 1

Thymine and cytosine are distinct from adenine and guanine in that they have single-ring structures, whereas adenine and guanine have double-ring structures.

What is the structure of DNA?

• In genomics, a double helix is a term used to describe the physical structure of DNA. A DNA molecule is composed of two linked strands that wind around one another to form a twisted ladder in the shape of a helix. Each strand has an alternate sugar (deoxyribose) and phosphate backbone.

• A double helix is a twisted ladder-like structure made up of two interconnected strands that wind around each other. Each strand has an alternate sugar (deoxyribose) and phosphate backbone. Each sugar is linked to one of four different bases: adenine (A), cytosine (C), guanine (G), or thymine (T).

• For example, DNA and proteins both have a different and ordered structure, such as a right-handed double helix or a single -helix.

To learn more about DNA refer to :

brainly.com/question/16099437

#SPJ4