DNA


After staying on the plant Earth reaching the human genetic technology, I have
come up with this report the four things I am going to talk about in this report
are: 1) What is the chemical basis of the plant Earth 2) What do human mean by
"genetic technology" and how is it possible 3) How have human used this
technology 4) Are humans concerned about this technology

1)The chemical basis of the plant earth is deoxyribonucleic acid (generally
shortened to DNA), it has the shape of a long twisted ladder each rung of this
ladder is made up of a pair of chemical bases, the information that human body
need to make proteins is coded and contained in the order of these bases along
the length of the DNA ladder. All DNA molecules consist of a linked series of
units called nucleotides. Each DNA nucleotide is composed of three subunits: a
special sugar called deoxyribose, a phosphate group that is joined to one end of
the sugar molecule, and one of several different nitrogenous bases linked to the
opposite end of the deoxyribose. DNA has two specific functions: to provide foe
protein synthesis, and hence the growth and development of the organism and to
furnish all descendants with protein-synthesis and hence the growth and
development of the organism. So all living things on plant Earth contains the
genetic material DNA and the structure of a DNA molecule or combination of DNA
molecules determines the shape, form, and function of the offspring.

2)The term "genetic technology"(or genetic engineering) is the modification of
the genetic properties of an organism by the use of recombinant DNA technology.
By using this technology it is possible to alert characteristics of living
organisms in specific ways. The chemical languages of DNA in all living thing
are the same so it is possible to take one gene from one living thing and
transfer into another living thing. To give an animal permanent genetic change
the new gene must be inserted into the single cell embryo from which all the
cell’s will develop in the adult animal’s body. It is much difficult to
introduce DNA into plant cells. So humans take one microbe that infects the
plant normally and puts it in a virus or bacterium and make the it carries the
DNA into the plant cell.

3)Humans has already used ‘genetic technology’ and here are the three examples
of the living thing\'s human have used ‘genetic technology’ on. First example is
the environmentally friendly cotton (cotton is any of various shrubby plants
grown for the soft, white, downy fibers surrounding oil-rich seeds\' humans use
the fibers to make cloth). On the cotton there is a kind of pest called cotton
bollworm, it ate the fiber to live. Each year humans have to spend a lot of
money on pesticides to kill those worms. Now with ‘genetic technology’ humans
are trying to make bollworm resistant cotton. Humans have found a bacterium that
kills the bollworm, they are going to put this new gene into the cotton so it
will produce a protein that kills the bollworm, but the protein is harmless to
all the other living things. The second example I have got is disease free
potatoes. Potatoes always get infected by the leaf roll virus, with the new ‘
genetic technology’ humans are able to put a gene that normally produces the
outer protein coat of the virus. It helps the potato to resist the leaf roll
virus and tastes the same. The last example I have got is use ‘genetic
technology’ on animal health. Ticks and lice are the insects that suck animals
fat the animals that have tick or lice will go skinny and die. Now with the help
of ‘genetic technology’ humans are able to transfer a plant gene into the
animal\'s body so the animal will produce a natural insecticide in their sweat
glands, then whenever tick or lice suck its blood they will die.
Although "genetic technology" brings a lot of convenience to human society but
it brings up a lot of concerns too. The kinds of questions like ‘are we playing
god’ and ‘are we interfering with nature’ are being risen. Many humans are worry
about that genetic technology will change species on plant Earth to make them
dangerous or threat they life and it does have the potential to produce
dangerous organisms.
That is all the research I have done on plant Earth. From all the information
I have just presented you can see that human genetics is a very complicated
thing and it is