The Dna And Its Structure

2011 Words Apr 25th, 2016 9 Pages
Genes hold biological information that must be copied accurately for transmission to the next generation. Before the DNA double helix was discovered two biological question were unanswered: how can information for specifying an organism be carried in chemical form? and how is it accurately copied? It was not until the 20th century when the DNA molecule was discovered and suggested answers to both these questions. (Alberts B, Johnson A, Lewis J, et al, 2002) With the help of many scientists we now know exactly what the DNA molecule is, its structure, and its function. The knowledge gained throughout the years on DNA has allowed many things such as that of genetic genealogy. Knowing the structure of the DNA is what has helped/continues to help scientists and people today understand this makeup.

The Molecule of Heredity

We are all aware of the fact that elephants give birth to only baby elephants, giraffes to giraffes, dogs to dogs and so on for every type of creature. But why is that? What is the reason behind this fact? These questions can both be answered when we look at what lies in the molecule we all know as DNA also known as Deoxyribonucleic acid. DNA can be found in eukaryotes inside an area of the cell known as the nucleus. Due to the size of the cell and because organisms have many DNA molecules per cell, this DNA is tightly packed. This tightly packed DNA is not referred to as a chromosome. DNA does more than just specify what the…
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