The many recipients.” (Verlinsky, 2005, p.24) The

designer babies may cause new illness which cause by the gene changing. “The
loss or alterations of genes involved in the damage response pathways have been
reported in many cancer susceptibility syndromes and in sporadic tumors.
Furthermore, this surveillance pathway is activated during early tumourigenesis
presumably due to uncontrolled replicative cycles and has been recognized as
one of the main barriers against the development of cancer.” (Kiviharju-af
Hällström and Laiho, 2008, p.902) Many cancers are cause by the genetic changes
which make the cell changes, the designer babies need to change the gene of the
cell of the babies, there will be risky to make the new illness that people
can’t solve out. And the diseases which cause by the gene lost are not just the
cancer, there will be more kinds of new diseases that people need more time and
money to deal with. The designer babies can use to avoid the illness which are
taken from parents and other, “The preimplantation genetic diagnosis (PGD) of
human embryos permits those embryos carrying gene disorders or a non-diploid
chromosome constitution to be identified. Numerous disease genes including
those with a late onset have been identified and the conditions averted in
children. Risks of abortion have been reduced, and the incidence of live births
raised after PGD. It is also possible to select embryos with human leukocyte
antigens (HLA) identical to those of a sick elder sibling, and then use stem
cells from cord blood at birth to supply the necessary therapy. This form of
treatment has alleviated the inherited disease in many recipients.” (Verlinsky,
2005, p.24) The designer babies can make people get less disease which is
benefit for people. However, known diseases that humans can prevent, treat or
control, but the unknown diseases are more harmful to humans that there are no
known treatments and controls. So the designer babies shouldn’t be allowed because
it is penny wise and pound-foolish.

     The designer babies will increase the
population pressure, because it will make more babies come to our world. Grepperud(1996) found that a rapid degradation of land would
take place when the pressure from people and livestock exceeds some threshold,
if the designer babies was accepted by most people, the population of the world
will increase fast and the population pressure of the earth will be more
serious. But the designer babies is benefit for the aging countries which have
the low Birth rate, “The number of individuals aged 60 years or older is
projected to double as a proportion of the world’s population and to more than
triple in number over the next 50 years.” (Tucker and Buranapin, 2001, p.17) The
aging people will be more in recent years, “While population aging is a global
trend, its impact is not equal; over the next decades, today’s developing
countries will likely contend with double challenges at least in these areas.”
(Higo and Khan, 2015, p.146) And the aging problem is not equal in the
developed and developing countries, developed countries need the designer
babies and the developing countries will need the technology too. The developed
countries suffer from this problem now, and in the near future, the developing
will face this problem too. Although the problem do not appear at the same time
in the developed and developing countries, the designer babies will be needed
to solve the problem. However, the designer babies can be used to solve the aging
problem in the aging countries, it will cause the population pressure in the
world which is more serious. So the designer babies should not be allowed and

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     In a word, the designer babies have some
advantages that make it may be good for people, but there are some more serious
problem that make it better not to be allowed and developed. The designer
babies should be banned, because it debates morality, has low rate to success,
may cause new illness, and increase population.