Butterflies range in size from just over half an inch up to almost 12 inches. The size of the butterfly depends on the wingspan and the body. The butterfly with the biggest wingspan is the Queen Alexandra’s birdwing, which has a wingspan up to 1 foot (30 cm) wide.
During fertilization of the egg by the sperm, the DNA of the sperm is injected into the egg. Both the sperm and the egg have a single set of chromosomes each, but the fertilized egg receives the DNA from the sperm and comes to possess both the sets of chromosomes. This fertilized egg cell stays…
The practice of people eating insects is called entomophagy. It has been practised for centuries throughout Africa, Australia, Asia, the Middle East, and North, Central and South America. This is because many bugs are both protein-rich and good sources of vitamins, minerals and fats.
Every person, including identical twins, has a unique eye and tongue print along with their finger print. Tongue prints are as distinctive as eye and finger prints. The technique of biometry is being used to identify individuals using the uniqueness of the iris. Nowadays, tongue prints are also being considered for biometrics, since tongues are…
Camels have three eyelids. They have upper and lower eyelids that have eyelashes to shield the eyes from sand. In addition, camels have a third eyelid, which is thin like a transparent membrane. It opens sideways, from both sides, like a shutter. Camels can see through this third eyelid during sandstorms.
Researchers had found that the human eye spots the colour yellow very fast. Following this cue, John Herz, founder of the Yellow Cab company, picked up the yellow colour for cabs so that they would be easy to locate by travellers.
