Asexual Reproduction in Animals

In asexual reproduction, only one parent is involved.Binary fission involves the splitting of an organism into two.Amoeba is a simple, unicellular organism.Reproduction in amoeba begins with the division of the nucleus.The parent organism divides into two individual organisms is fragmentation or binary fission.Bulges that appear as outgrowths on hydra are called buds. These buds separate as new individuals, called budding.Dolly was the first cloned mammal, and is genetically identical to its parent sheep.
Cloning is creating an exact copy of a biological entity.A clone is created by inserting the complete genetic material of a regular body cell from a donor into a recipient.Sheep are viviparous animals, and so propagate their offspring sexually.Sir Ian Wilmut from Roslin Institute in Edinburgh, Scotland created Dolly.

A mammary gland cell of the Finn Dorsett sheep species and an enucleated cell of the Scottish Blackface ewe were subjected to an electric pulse to cause fusion, thereby resulting in a fertilised egg that developed into a zygote.The embryo was implanted into the uterus of the ewe to undergo rapid cell division to form a foetus.Offspring inherit characteristics from both the parents.Dolly received all the genetic information from the Finn Dorsett sheep.Dolly produced several offspring.Cloning involves certain abnormalities.Dolly suffered from arthritis.Cloning could impact mental development.Advocates of human therapeutic cloning believe that cloning could help in producing organs for transplantation and in regenerative medicine.