2011-10-20

What is a gene?

A gene is a molecular unit of heredity of a living organism. All organisms have many genes corresponding to various different biological traits, some of which are immediately visible, such as eye color or number of limbs, and some of which are not, such as blood type or increased risk for specific diseases, or the thousands of basic biochemical processes that comprise life.

What is a DNA?

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms (with the exception of RNA viruses). The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.


Chemical structure of DNA























Original page:
http://ko.wikipedia.org/wiki/DNA



 
DNA Images























Original page:
http://images.yourdictionary.com/dna