Thousands of years ago,astronomers divided the stars into groups and drew imaginary pictures around them, such as that of a hunter or a bear.This made it easier for them to remember the stars patterns.Such a group of stars is called a constellation.The shape of a constellation is always remains the same.Constellations appear to move from east to west.Today,88 constellations are recognized by astronomers. Remember, however,that the stars in a constellation are actually unrelated.They are at widely varying distances from the Earth.However,when viewed...
Showing posts with label latest information. Show all posts
Showing posts with label latest information. Show all posts
Saturday, June 29, 2013
Monday, June 17, 2013
some amazing facts about body
.jpg)
ChromosomesA bigger organism has a larger number of cells than a smaller one-but the size of cells has no relation to the size of the organismChromosomes in the nucleus occur in matching pairs.There are 23 pairs of chromosomes in every normal human cell.In each pair,one chromosomes comes from the father and one from the mother.Each chromosomes in the nucleus has thousands of tiny genes.along its length-like the beads of necklace.The gene is the unit...
Subscribe to:
Posts (Atom)
