This is 21st century, the age of Biotechnology. In past few years various advances have been made in the field of genetic engineering. We are able to isolate, incorporate and express genes of desired characteristics from one species to another. Thus we have achieved :
- High beer production by incorporating the genes coding for amylase from yeast to bacteria.
- Human Insulin
- Vaccins
- Hormones
For development of such useful products, genes must be identified.It was therefore became essential to know how our genes located in genome. Human Gnome Project (HGP) aimed at sequencing complete human genome was started in 1990. 13 years of joint effort of scientists from 18 countries and an expense of huge money ($3billion) ultimately lead to success.
Today it is known :
- Nearly 3 billion bases makes up the whole genome.
- There are 20,000 to 30,000 genes present in whole genome.
- Majority of DNA do not code for genes (Junk DNA).
Hence, there's
A gene for eye colour
A gene for height
A gene for fairness
A gene for sense and signaling(proteins)
A gene for movement and transport(proteins)
A gene for energy generation(enzymes)
A gene for growth
A gene for DEATH (ageing)
But hold on!!!
Where is the GENE FOR HAPPINESS???
No gene! If there be a gene for happiness, what I would have done is-
- Isolate it
- Insert it into a vector
- And enjoy its expression
So if there is no gene for happiness then how do we feel happy?? There might be another cause for it.
Yes, I got it!!!! Cause must be present in region what we call as JUNK DNA. Because junk DNA is a part of DNA, it will inherit in children from parents. This is how nature of parents remain semi-conserved in their sons/daughter...