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DNA is like an alphabet: analogies

You, your cells, chromosomes, and DNA

{ http://www.geneticdisordersuk.org/aboutgeneticdisorders/basicterms }
{ http://is.muni.cz/th/284031/pedf_m/ByrtusovaDP.pdf }

organism cell chromosome DNAorganism cell chromosome DNA 2

Letters                                                                               DNA Bases (aka nitrogenous bases)

Drawings made of lines and curves.                               Rings of C, H and N atoms

26 different letters                                                            4 different nucleotides are used in DNA

A, B, C, D, E, F, G, H….X, Y, Z



Word                                                                                 Gene

The smallest meaningful unit of speech                         The smallest meaningful unit of DNA that tells

that can stand by itself.                                                     a cell how to build a protein.

                                                                                  Example:   C-G-T-G-C-A-G-A-T
(builds a protein made of three amino acids)


Sentence                                                                            A group of genes working together

A group of words put together to mean something.     C-G-T-G-C-A-G-A-T

A sentence is the basic unit of language which              A -A-T-G-C-T-G-A-C

expresses a complete thought.                                        T-C-C-C-G-A-T-G-A


Book                                                                                       Chromosome

Many sentences are put together
to tell a complete story.

Book-iconchromosomes 1

Library                                                                                                Genome

A group of books, often on a related topic.                  All the chromosomes in a cell.



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  1. […] DNA is like an alphabet: analogies […]


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