The first cloned animal attempt, the cloning of a ewe lamb named Dolly, took multiple trials before the scientists found an embryo that actually matured. Although cloning was successful, a number of abnormalities presented in the animal and due to premature aging, it died early. (Jaenisch 2004) stated that cloned animals don't normally survive the gestational period and if they do, they normally present with many abnormalities. His research showed that genes were not properly expressed in cloned mice due to improper coding of the genes by the donor nucleus. On that note and also with Dolly in mind, he suggested that it would be extremely difficult to clone humans. Similarly, (Cheshire et al. 2002) stated that embryologists estimated that a successfully cloned human embryo would be the result of hundreds of attempts and would be very costly. Additionally, cloning can be deemed infeasible because embryonic stem cells are pluripotent and thus might not develop into the expected organ. (Cheshire et al. 2002) also acknowledges the pluripotent nature of embryonic stem cells but they convey the belief of others that the cells are pluripotent and thus can replace tissues and improve the health of patients. However, this is not entirely true because pluripotent
The first cloned animal attempt, the cloning of a ewe lamb named Dolly, took multiple trials before the scientists found an embryo that actually matured. Although cloning was successful, a number of abnormalities presented in the animal and due to premature aging, it died early. (Jaenisch 2004) stated that cloned animals don't normally survive the gestational period and if they do, they normally present with many abnormalities. His research showed that genes were not properly expressed in cloned mice due to improper coding of the genes by the donor nucleus. On that note and also with Dolly in mind, he suggested that it would be extremely difficult to clone humans. Similarly, (Cheshire et al. 2002) stated that embryologists estimated that a successfully cloned human embryo would be the result of hundreds of attempts and would be very costly. Additionally, cloning can be deemed infeasible because embryonic stem cells are pluripotent and thus might not develop into the expected organ. (Cheshire et al. 2002) also acknowledges the pluripotent nature of embryonic stem cells but they convey the belief of others that the cells are pluripotent and thus can replace tissues and improve the health of patients. However, this is not entirely true because pluripotent