Negative Effects of Animal Cloning
A method used to produce multiple copies of a certain animal is referred to as animal cloning. The most frequently and latest method of cloning is called Somatic Cell Nuclear Transfer. In this method, the nucleus is removed from one animal and replaced with a nucleus from the animal to be cloned Panno, 2009.
In most cases, the donor has to be an animal which has desirable traits. The cell will develop into an embryo that will be implanted into the surrogate mother. The born animal will have the same DNA as that of the donor animal, which will ensure that it will also have the same desirable traits.
Less biodiversity
Due to cloning and using of animals with the desirable traits, there is a likelihood that the animals cloned will all have the same DNA which will result in no biodiversity. This will mean that in case one animal is affected by a certain disease, there is a high chance that all the other cloned animals will be infected too. There are other far reaching consequences to this like a whole population of animals can be wiped out because of a particular disease. This will affect the whole food chain for other animals as well.
The lack of diversity in animals would lead to the weakening of the animals' ability for adaptation. Since cloning will use the DNA of certain animals, the resultant clones would not be able to adapt to environmental changes. Without diversity, the population of animals will not manage to adapt in order for its survival. As cloned animals will mostly have the same gene pool, there will not be any variable traits that would allow the cloned animals to adapt. Genetic diversity allows a species to evolve. Cloned animals will have less genetic variations and...
Majority of research conducted has indicated that cloned animals mostly live for half the expected life span of normal animals Gregory & Grandin, 2007.
This means that if cloning is adapted fully, there is a likelihood that some animals will become extinct much faster, or there will be need for constant cloning to ensure that no species is wiped out completely. The best example would be of Dolly, the first ever successful sheep cloning, lived for only 6 years, which is half the average age for a sheep.
The average birth rates are also very low for clones, for instance Dolly was the only clone born out of 277 embryos. This means that cloning is very inefficient. Even with successful cloning the animals will only live for half the expected life span. Cloning makes use of adult chromosomes, which means that the cloned animal would have the genetic of a mature and aging animal. This is another reason why the clones have a shorter life expectancy. The cloned animal would have a normal appearance, but it has inherited some abnormalities from its donor.
Adverse health
Cloned animals may look normal for days, weeks, or even months after birth, but there are some other effects that will affect the cloned animals. Research has shown that though clones may seem normal, there is a high likelihood that the clones will develop some defects later on in life. In a study conducted by Japanese scientists indicates that out of the twelve…
