Biotechnology Genetics

Human DNA: The code of life

Human DNA

DNA or deoxyribonucleic acid is one of the most abundant molecules, present in living organisms. It consists of two chains that coil around each other to form a double helix. DNA is present in all parts of the human body and the main purpose of this important molecule is to carry genetic instructions from one generation to another.

There are lots of misconceptions about this important molecule. Therefore, In this article, we will talk about human DNA with science-based facts and evidence. So if you want to know more about DNA and DNA test, this topic is for you.

Understanding DNA?

The human body has wonderful mysteries that researchers are trying to solve. The word DNA stands for deoxyribonucleic acid. In fact, it is a molecule composed of two chains that coil around each other to form a double helix.

DNA carries genetic instructions for the functioning, development, growth, and reproduction of all known organisms and many viruses.

Interesting Facts About Human DNA

The science of studying DNA is quite interesting. Some of the facts about DNA will make you laugh but some facts are quite insightful. The analysis of DNA shows great similarities among living organisms and viruses. Here are some important facts that you would like to read:

  • Four Components of DNA: DNA can be divided into four main components – nucleotides adenine, guanine, thymine, and cytosine
  • Universal Similarity: All of us have 99% same DNA but 1% portion of DNA is what that differentiates us from others.
  • Complicated and Long DNA Sequence: The DNA sequence in a human body can be long enough to go to the Sun and back 600 times.
  • Parent-Child DNA Similarity: About 99.5% of the DNA can same in parents and their child. Please note that no two living organism and viruses in this world can have 100% same DNA.
  • Similarity with Chimpanzee: About 98% of the DNA of a human can be similar to that of a chimpanzee.
  • Long Long Human Genome: The overall human genome is very very long. Typing the human genome can take about 50 years to type on a computer.
  • Fragile DNA Molecules: DNA molecule is so delicate and it changes every single day.
  • Similarity with Mud Worms: It has also been illustrated in a research study conducted by some scientists at the Cambridge University that the DNA in mud worms is similar to that of in humans. The funny thing is, you have more in common in mud worms than in octopus, spiders, and cockroaches.
  • Similarity with Eatables: It might surprise you to know that human DNA can be similar to vegetables and other eatables. The DNA of cabbage is about 45% similar to the DNA of human beings.
  • Purpose and History of DNA: The initial research on DNA was conducted by a scientist Friedrich Miescher in 1869 when he discovered DNA. After many years, scientists finally understood what DNA is. Some researchers explored in 1943 that DNA was the genetic material in cells. Before 1943, it was believed that genetic information is being stored in proteins.


What is a DNA Test?

DNA testing or genetic testing or a DNA test,  all means that type of analysis which helps in finding ancestry and bloodlines.  However,  this test also helps us to find out about inherited diseases.

Progeny testing is a form of genetic testing in agriculture. This unique test helps to evaluate the quality of breeding stock.   In the end, we can say that a DNA test is an important analysis of genetic information.

Read more: What is Biotechnology?


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