Cloning
describes the process that can be used to produce genetically identical copies
of a living body. The copied thing, has the same genetic makeup as the original
and is referred to as a clone. When considering to clone something there is a
lot of ethical reasons that prevent people from justifying it’s alright to
clone it. Human cloning is the most talked about when considering if its
ethical. Most people don’t understand what cloning is or means to scientists. The three types of cloning, gene, reproductive,
and therapeutic each have there own benefits and draw backs.
Scientist
Lee Silver said during an interview with NOVA, “95 percent of them said they
were against human cloning” referring to a survey he had given. He says people
just don’t understand what it means to scientists when you clone something.
They see cloning as a way to replicate a human being and it soul. People were
scared that scientists had gained control over the human life. This is not how
Silver sees human cloning though. To him the only thing that a clone is is an
organism that has the same genetic information as another organism. He
continues to say that people eat clones all the time. Bananas are all produced by
cloning and so are seedless grapes. Silver explains that cloning can benefit
humans by lowering the risk of birth defects the kids are born with. A UK
national health panel found a way to swap chromosomes between eggs so the offspring
don’t inherit disease causing mutations from their mother’s mitochondria. This
process is considered a type of cloning and is just the first step to making
humans less perceptible to many common birth defects. By adding in the genes of
a third person who doesn’t have a history of the target birth defect and
removing the parent’s gene that does, you can reduce the risk that the child is
born with the targeted defect. Some of the dieses that can be prevented are
type 2 diabetes, deafness, blindness, and neurological problems. This process
of swapping chromosomes is currently being tested on people after being
successful in attempts on other animals. But there’s another ethical quandary
here, it involves the destruction of the donor egg after it’s been fertilized.
Also some people see the egg donor as a third parent which is not completely
true. The child may be receiving new mitochondria from a third person but the
mitochondria don’t affect the genes of the child which are tested when
determining who the parents are. Mitochondria are similar to a battery in some
technological device and your genes are the information on the device. When you
change the battery, you are not effecting the information stored on the device.
This is also true for when swapping the mitochondria in humans. This procedure
of swapping mitochondria can make it possible from women with high amounts
mitochondrial dieses to have a healthy baby.
Reproductive
cloning is what everyone thinks about when they hear the term cloning. While
reproductive cloning is a one of the three types of cloning it’s not the only
form. The other two types of cloning are called gene and therapeutic cloning. Reproductive
cloning produces an exact copy of the whole animal. This type of cloning is
used when you want to use only one set of genes instead of splitting two sets
which is how babies are formed naturally. Another form of cloning is gene
cloning which produces copies of segments of genes in DNA. This type of cloning
can’t be used to clone humans and it has not been used to clone any animals as
of 2016. It allows scientists to take parts of someone’s DNA and replace it
with another person’s DNA to see how that segment effects the specimen’s
behavior. The third type of cloning is therapeutic cloning which produces embryonic stem cells for experiments
aimed at creating tissues to replace injured or diseased tissues. The
possibility to create parts of the human body such as a heart or liver could
help people who need transplants greatly. Cloning could be used to create a new
superior human race, one capable of higher feats are less prone to dieses and injuries.
“In
1979, researchers produced the first genetically identical mice by splitting
mouse embryos in the test tube and then implanting the resulting embryos into
the wombs of adult female mice.” In
1996, researchers succeeded in cloning the first mammal from a mature adult
animal. It took 276 attempts but Scottish researchers finally produced Dolly,
the lamb from a cell of a 6-year-old sheep. Since then cattle, cat,
deer, dog, horse, mule, ox, rabbit and rat have all been successfully cloned.
There is also some belief that a human clone named Eve was created back in 1998
but the company Clonaid didn’t provide any information that could prove if she
was. It was believed Clonaid also cloned 12 other people after Eve but there
was still no information proving this theory. Besides the 13 theoretical human
clones, scientists in South Korea claimed to have successfully cloned a human
embryo, but the experiment was shut down early due to ethical reasons. Another
reason human cloning isn’t happening is because of the difficulty in
successfully cloning a human. The process is much more complicated because our
genetic structure is slightly different from most mammals. A protein known as
the spindle protein is located close to our chromosomes in the eggs and when
removing the nucleus to replace it with another the proteins are removed which
causes the cell to not be able to divide.
As you can see, there are still many problems
with human cloning ethically and technically. While most people continue to believe
that cloning is wrong and immoral, scientists continue trying to find better
ways to successfully clone humans and other mammals that may have become
extinct. Human cloning has a place in our future and I don’t see it going
anywhere anytime soon. It holds the solutions to many of our current problems
such as cancers and organ failures. It could potentially be used to replace lost
limbs of soldiers and people who were born with defects. Cloning is becoming a
part of the future reproduction of humans and animals whether people want it to
be or not.
Citations
"Cloning Fact Sheet." National Human Genome Research Institute (NHGRI). NIH, May 2016. Web. 29 Oct. 2016.
By Veronique Greenwood. "Genetically Engineering Babies With Less
Disease-and 3 Parents-Seems Safe - 80beats." 80beats. N.p., 21 Apr. 2011. Web. 29 Oct. 2016.
"Human CLoning." PBS. PBS, 2001. Web. 29 Oct. 2016.
This was a really interesting topic and I enjoyed reading your paper. I knew little about the topic and hadn't realized that cloning had different forms and many scientific benefits. I definitely agree with you that the biggest push against cloning would be ethical issues. This is probably where scientists and the public are the most divided, especially in respect to reproductive cloning.
ReplyDeleteI most enjoyed reading the section of your post about therapeutic cloning. I didn't realize this was a thing, but it sounds like it will be something really beneficial in the future. This was good evidence to support your thesis that cloning can have it's benefits. Good job!
Ashley
Your project was engaging and I enjoyed reading about cloning. In my opinion reproductive cloning is the most dangerous topic to talk about. On one hand you have the pros that you could clone a family dog that passed away and on the other it could be used in cloning human beings. Luckily, this is not the only type of cloning. I think that cloning will be used a on large scale soon to create segments of broken DNA or grow organs for the body.
ReplyDelete-Will