Deoxyribonucleic acid (DNA) is the hereditary matter in cells that makes up the repository for genes. DNA's structure consists of sugar, phosphate groups,and nitrogenous bases in its nucleotides. These bases are cytosine, thymine, adenine, and guanine. Cytosine and thymine are classified as pyrimidines that have a single ring. Adenine and guanine are classified as purines that have a double rings. Adenine base pairs with thymine (uracil only in RNA), and cytosine base pairs with guanine.

Deoxyribonucleic acid (DNA) is the hereditary matter in cells that makes up the repository for genes. DNA's structure consists of sugar, phosphate groups,and nitrogenous bases in its nucleotides. These bases are cytosine, thymine, adenine, and guanine. Cytosine and thymine are classified as pyrimidines that have a single ring. Adenine and guanine are classified as purines that have a double rings. Adenine base pairs with thymine (uracil only in RNA), and cytosine base pairs with guanine.

Circular amino acids table - much easier to use than the grid version

Circular amino acids table - much easier to use than the grid version

molymod - The original dual-scale system of Molecular Models - DNA RNA. The advanced miniDNA® system comprises colour-coded, abstract-shaped parts designed to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate components needed to make a double-helix model of DNA.  The three hydrogen bonds that connect Cytosine to Guanine and the two that connect Thymine to Adenine are represented by the appropriate number of pegs.

molymod - The original dual-scale system of Molecular Models - DNA RNA. The advanced miniDNA® system comprises colour-coded, abstract-shaped parts designed to represent the nitrogenous bases, pentagonal sugar and pyramidal phosphate components needed to make a double-helix model of DNA. The three hydrogen bonds that connect Cytosine to Guanine and the two that connect Thymine to Adenine are represented by the appropriate number of pegs.

The structure of DNA is similar to a ladder. It has a chemical phosphate and sugar backbone, which make up the sides of the ladder. (Deoxyribose is the sugar found in the backbone of DNA.) The two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). (A grouping like this of a phosphate, a sugar, and a base makes up a subunit of DNA which is known as a nucleotide.

The structure of DNA is similar to a ladder. It has a chemical phosphate and sugar backbone, which make up the sides of the ladder. (Deoxyribose is the sugar found in the backbone of DNA.) The two sides of this sugar-phosphate backbone are four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). (A grouping like this of a phosphate, a sugar, and a base makes up a subunit of DNA which is known as a nucleotide.

A diagram shows the three separate components of a nucleotide and how they are combined to form a complete molecule. A nitrogenous base is represented as a purple hexagon. A sugar is represented as a grey pentagon. A phosphate group is represented as a light brown circle. A cut-away from the generic nitrogen base shows the chemical structure of the three types of pyrimidine bases (cytosine, thymine, and uracil) and the two types of purine bases (adenine and guanine).

A diagram shows the three separate components of a nucleotide and how they are combined to form a complete molecule. A nitrogenous base is represented as a purple hexagon. A sugar is represented as a grey pentagon. A phosphate group is represented as a light brown circle. A cut-away from the generic nitrogen base shows the chemical structure of the three types of pyrimidine bases (cytosine, thymine, and uracil) and the two types of purine bases (adenine and guanine).

My life, literally and figuratively.  Glad someone else calls them "nitrogenous base"s and has the directionality of the riboses and number of H-bonds right.    Just realized it's originally from IDT.  That explains it!

My life, literally and figuratively. Glad someone else calls them "nitrogenous base"s and has the directionality of the riboses and number of H-bonds right. Just realized it's originally from IDT. That explains it!

Italian Gelato Recipes---Let's start with a basic custard cream gelato and then add a whole bunch of different ingredients to give it some great flavors. You’ll need an ice cream maker for this one but its well worth the end results. Soon you’ll understand why this special dessert has been an Italian favorite for centuries.

Italian Gelato Recipes---Let's start with a basic custard cream gelato and then add a whole bunch of different ingredients to give it some great flavors. You’ll need an ice cream maker for this one but its well worth the end results. Soon you’ll understand why this special dessert has been an Italian favorite for centuries.

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