Leopards may soon change their spots, with a little scientific help

The day when people can design their own patterned animals - from spotted elephants to striped leopards - is coming closer thanks to the work of a group of Hong Kong mathematical biologists.

According to Wei Juncheng, mathematical biologists have figured out a way to control the patterns on animals and plants without altering their genetic makeup.

The Chinese University of Hong Kong professor, who recently discovered a mathematical equation that can be used to change spots to stripes, explained that an organism's appearance can be changed by manipulating its environment.

'The world seems random, but there are universal rules [mathematical equations] that govern things. Mathematical biologists have known for a long time that there are two different chemicals in each species that determine the pattern of the organism. Now we are working out the chemicals and exact equations,' he said.

'All living things have patterns, but some are more outstanding than others. You can easily make the pattern asymmetrical or change the size and frequency of spots and lines.'

Professor Wei explained that patterns are controlled by two mathematical equations. First, the ratio of the two chemicals determines how many dots or stripes an animal has. By adjusting an organism's environment its motility is changed - causing the chemicals to be activated differently.