Can you consider a cluster of eggs as a tissue

The empty egg is then injected with DNA from another mature cell, such as a skin or blood cell. Even though the DNA is from a mature cell, the environment of the egg will basically reprogram the genetic material from the mature cell, so that it can create an embryo. If the egg keeps developing, it will develop into a clone of the person or animal from which the mature cell was taken.

Frogs have relatively very large eggs, so they are easy to work with. The researchers took a fertilized egg from a frog, removed the DNA, and injected the egg with genetic material from an intestinal cell of another frog. After about 40 days, the egg matured and developed into a tadpole. The tadpole was genetically identical to the frog from which the intestinal cell was taken.

Soon, some labs started performing this process in mammals, but the early attempts at this process failed. After 30 years of failed attempts, in , researchers from Scotland successfully cloned a sheep named Dolly Figure 3A , proving that cloning is also possible in mammals.

The famous singer Barbara Streisand, who felt very sad when her dog died, payed researchers a large amount of money to clone two puppies identical to the original dog!

In , macaque monkeys were cloned successfully for the first time Figure 3B , and in , the Chinese police announced the cloning of a police dog that has since started to take a training course. As we mentioned, human cloning is illegal, but a procedure called therapeutic cloning is allowed, meaning cloning for medical purposes.

The same procedure described above for frogs is performed on fertilized human eggs, which are emptied and injected with genetic material from another cell, usually a skin or blood cell. After about a week, pluripotent cells are removed and used to grow ESCs. In this way, it is possible to produce ESCs from any living person! This means that, in the future, when we know how to produce tissues, such as liver tissue from ESCs, it might be possible to grow new organs to use for transplants.

The big advantage in using genetically identical cells for transplants is that the immune system does not see the transplanted organ as foreign and therefore will not attack it the same way it would attack an organ from a genetically different individual.

This prevents many problems and complications. If you consider the egg shell the container, than yes. The shell keeps the egg from spoiling too quickly. Cluster Diagram apex. The sperm cannot fertilize the egg. Log in. Study now. See Answer. Best Answer. OR We can consider a cluster of eggs as a tissue as they are similar cells and perform a specific function. Study guides. Genetics 20 cards. What are chromosomes made of.

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