I totally forgot to post this –it’s DNA day today! I love things like this–DNA day, Bring Our Daughters + Sons to Work day, etc. My Arianna is not old enough to have fun with these initiatives so I’m having all the fun for her. Hopefully she’ll read this blog post 10-15 years from now and appreciate that we share the same DNA.
National DNA Day commemorates the completion of the Human Genome Project in April 2003 and the discovery of the double helix of DNA in 1953.
FYI, according to ASHG (http://www.ashg.org)
DNA (deoxyribonucleic acid) – a double-stranded molecule made up of four building blocks called nucleotide bases (different chemicals that are abbreviated A, T, C, and G) that are arranged in a certain order throughout a genome. The human genome has 3 billion pairs of bases. The order of these nucleotides are critical to the accuracy of the instructions of a gene. The most important molecules encoded by genes are RNA and proteins.
Gene – the functional and physical unit of heredity passed from parent to offspring. Genes reside on chromosomes. If a gene is like a chapter in a book, the chromosome is the book itself. Proteins and RNA influence how an organism looks, how well its body metabolizes food and fights infection, and even how it behaves. The number of human genes is about 20,000-25,000. Different genes can vary in length and cover thousands of bases.
Genome – All the DNA contained in an organism or a cell.
Don’t you just love science?!