Normal cell division is also the basis for asexual reproduction. Only one type of cell is involved, with no input from another individual. Because no new genetic material is introduced, there is no variation in the resulting offspring.
The Polka is a Central European dance and genre of dance music familiar throughout Europe and the Americas.It originated in the middle of the 19th century in Bohemia, now part of the Czech Republic.he polka also migrated to the Nordic countries where it is known by a variety of names in Denmark (galopp, hopsa), Estonia (polka), Finland (pariisipolkka, polkka), Iceland, Norway (galopp, hamborgar, hopsa/hopsar, parisarpolka, polka, polkett, skotsk) and Sweden (polka).
The polka was introduced in England by the middle of the nineteenth century. However, it did not achieve the popularity it had achieved on the Continent. By this time, it had also reached the United States.he dance was first introduced into the ballrooms of Prague in 1835. The name of the dance (pulka) is Czech for half-step, referring to the rapid shift from one foot to the other. In 1840, Raab, a dancing teach of Prague, danced the polka at the Odeon Theatre in Paris where it was a tremendous success.