Top 5 Oldest Universities of India in continuous operation

Top 5 Oldest Universities of India in continuous operation

(1). Anna University - Chennai, Tamil Nadu; active since 1678.

(2). College of Engineering Guindy - Chennai, Tamil Nadu; active since 1794.

(3). University of Madras - Chennai, Tamil Nadu; active since 1857.

(4). Madras Christian College - Chennai, Tamil Nadu; active since 1835.

(5). University of Calcutta - Kolkata, West Bengal; active since 1857.

The 5 nuclear-weapon countries under the NPT

The 5 nuclear-weapon countries under the Nuclear Non-Proliferation Treaty (NPT)

(1).    People's Republic of China

(2).    France

(3).    Russia

(4).    United Kingdom

(5).    United States of America

Top space agencies with manned spaceflight capability

Top space agencies with manned spaceflight capability

»»    China National Space Administration (CNSA) : People's Republic of China

»»    National Aeronautics and Space Administration (NASA) : United States

»»    Russian Federal Space Agency (RFSA) : Russia

Sex determination in Human

Sex determination in Human : In human male sex chromosome is XY, where in female sex chromosome is XX.

During gamete (sperm) formation in male half of the sperm contains X chromosome while other half contain Y chromosome. In female all gametes contain only one type of chromosome that is X.

Sex determination in Human

Thus when a male gamete i.e. sperm carrying X chromosome fertilize an ova, the zygote develope into female. When a sperm carrying Y chromosome fertilizes an egg, zygote develops into male.

First in the World : Volume VI

»»    First country to start Civil Service Competition : China

»»    First city to be attacked with Atom Bomb : Heroshima (Japan)

»»    First Woman Prime Minister of a country : S. Bhandarnayke (Sri Lanka)

»»    First man to compile Encyclopedia : Aspheosis (Athens)

»»    First Asian to win Wimbledon Trophy : Arthur Ashe