Dna And Its Code

GREGOR MENDEL—(*# 1/7 Gregor Mendel's Monumental Discovery*) It was Mendel's monumental work with genetics in the mid-19th century that laid the foundation for all modern research work in genetics. The complete story will be found on our website.

YOUR BODY'S BLUEPRINT— (*#2 The Story of DNA*) Each of us starts off as a tiny sphere no larger than a dot on this page. Within that microscopic ball there is over six feet of DNA (deoxyribonucleic acid), all coiled up. Inside that DNA is the entire code for what you will become,—all your organs and all your features.

The DNA itself is strung out within long coiling strips. DNA is the carrier of the inheritance code in living things. It is like a microscopic computer with a built-in memory. DNA stores a fantastic number of "blueprints," and at the right time and place issues orders for distant parts of the body to build its cells and structures.

You have heard of "genes" and "chromosomes." Inside each cell in your body is a nucleus. Inside that nucleus are, among other complicated things, chromosomes. Inside the chromosomes are genes. The genes are attached to chromosomes like beads on a chain. Inside the genes is the complicated chemical structure we call DNA. Each gene

THE DNA MOLECULE—Here is a look inside the marvelous DNA molecule.

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