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# DNA - Deoxyribonucleic Acid - DNA was first recognized and identified by the Swiss biologist, Johannes Friedrich Miescher in 1869 - is composed of 2 strands arranged as a right-handed helix in opposite directions - stores information for protein construction - contains sugar deoxyribose 2 strand...

# DNA - Deoxyribonucleic Acid - DNA was first recognized and identified by the Swiss biologist, Johannes Friedrich Miescher in 1869 - is composed of 2 strands arranged as a right-handed helix in opposite directions - stores information for protein construction - contains sugar deoxyribose 2 strands are held together by Hydrogen bonds Base pairing of: Guanine-Cytosine and Adenine-Thymine ## DNA TYPES - A-DNA: It is a right-handed double helix similar to the B-DNA form. - B-DNA: This is the most common DNA conformation and is a right-handed helix. - Z-DNA: is a left-handed DNA where the double helix winds to the left in a zig-zag pattern. ## Different forms of DNA | Form | Description | |---|---| | A form | | | B form | | | Z form | | | B-DNA | | | A-DNA | | | Z-DNA | | # RNA - Ribonucleic Acid