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DNA Vocabulary

Double helix The twisted ladder shape of DNA molecules
Rosalind Franklin Scientist who discovered the shape of DNA using x-ray technology
Cytosine The nitrogen base that pairs with Guanine
DNA The large nucleic acid found in the nucleus; carries the code of life
Watson & Crick Scientists who created the first model of DNA
RNA The nucleic acid that reads the DNA code & uses the instructions to make proteins
Gene A segment of DNA that codes for a trait
Amino acid The building blocks of proteins
Protein The material used to make cells & tissues; it is also used as enzymes
Nitrogen bases The “rungs” or steps of the ladder which make up DNA; held together with hydrogen bonds
Thymine The nitrogen base that pairs with adenine
Trait A characteristic of an organism as determined by its genes
Guanine The nitrogen base that pairs with cytosine
Adenine The nitrogen base that pairs with thymine in DNA and uracil in RNA
Nucleotides The building blocks of DNA; made up of a sugar, nitrogen base, & phosphate group
Deoxyribose The sugar found in DNA
Ribose The sugar found in RNA
Phosphate group The part of the backbone of DNA that does not have bases attached
Complementary base pairs The opposite strands of DNA as determined by its base pairs
Replication The process of copying the DNA in a cell
Uracil The nitrogen base that pairs with adenine in RNA
Hydrogen bonds Weak bond that holds the nitrogen bases together in DNA
Created by: nbiegel



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