Eggs laid in all the four cases were analysed for the hormone testosterone and it was conclusively proved that eggs laid by females that mated with males having red bands on their legs had more quantity of testosterone. Thus the red band tied to the leg of the male has the same effect as the attractive plumage has. In other words a proper dress code has been found that adds to the attractiveness of the male zebra finches for the females of the species. Thus dressing up well for getting attention of the fairer sex, an exclusive trait of human beings, has worked for the male zebra finches. The writer is from the physics department, Punjabi University, Patiala.
Internet is the mother of all networks.
More than six million users access the Internet in more than hundred countries. It has scaled new heights of performance, and speed in the range of terabits per second. Applications such as videoconferencing have become a reality. According to a survey, Internet traffic is doubling every five months. Due to the bandwidth limitation, traffic congestion takes place and thereby Internet access becomes slower and expensive.