ADMS 1000 Chapter Notes - Chapter 5: White Feathers, Transfer Rna, Cytosine

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ADMS 1000 Full Course Notes
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ADMS 1000 Full Course Notes
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Deoxyribonucleic acid (dna) is a macromolecule that stores information: nucleotide molecule of sugar, a phosphate group, and a nitrogen-containing molecule called a base. Double helix: two sugar-phosphate strands spiral forming the backbone of dna, bases attached to the sugar molecules bond to those other attached to the other strand to form the rungs. Sugar is always deoxyribose and the phosphate molecule stays the same. Adenine & thymine connect with 2 hydrogen bonds. Guanine & cytosine connect with 3 hydrogen bonds. Dna is the universal code for all life on earth, embodying the instructions for building the cells and structures for virtually every single living cell. The full set of dna in an individual organism is called its genome. In prokaryotes the information is contained within circular pieces of dna. The alternative versions of a gene that code for the same feature are called alleles: any single characteristic or feature of an organism is referred to as a trait.

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