Why are the clones killed after they are used once? The woman who gave birth was immediately killed, but what if her sponsor needed a new heart in a year? Is she given a new clone to replace her old one? -- Mary Van Schaick


   I think this is a great question. The first thought that come our of my mind is "iphone". When people cracked their phone screen, they take their phone to the apple store, and pay 200 dollars to get their new phone. But many parts that in the cracked phone still work perfectly fine. Where do those trade in phone goes? Also, i think it will be even more ruthless if people cut out clones' body parts for multiple times, which means those clones have to suffer from pain for multiple times...

Questions

1. Are all the pluripotent stem cells the same? For example, is the stem cell from my skin as same as the stem cell from my hair? Is possible to exchange stem cell? Can I save my stem cell right now, and my grandson use my stem cell in the future?

2. If they use the clone technology, they still need to produce a embryo, and the embryo still have to grow up in a human body, however; in the movie, they did not explain this step and new clones just jump out of a bag of water! Is is possible that the clone technology can get to the stage that they can eliminate the process of putting the embryo back to a human body?

3. If human can start live much longer or eventually live forever, is there enough natural resources to be used for human beings? If everyone can live so long or forever, would they still have the desire to produce next generation? Then the entire human beings will be against the Revolution theory because human can only degenerate or remain the same.

4. Where can those clones go when they get out of the "island"? Their intelligence level is as same as a child, and there is already another he or she somewhere on earth. Also according to the movie, those clones are either very rich or powerful! Then it will definitely become a social issue because we definitely do not want to have two same president or two Justin Bibber... My question is how to settle down all the clones?

Your inner healers

  This is a absolutely astonish article, if this pluripotent stem cell technology become common accessible treatment, it will definitely change the entire human society in the future. I actually remember that I saw a advertisement in Hong Kong which advocates people to save their stem cell right now, therefore, they could benefit from it in the future. During that time, I had zero understanding of stem cell, but after I had read this article, I just realize that the chance for me to use this technology in my life time is not impossible! If this technology becomes more mature, we can use it to cure any diseases, and human can possibly live forever.
However, it will cause even bigger social problems, if people are never going to die, then do we still need to produce next generation? Do we need to get married? Do we need to exercise... etc. Anyway, the discovery of stem cell sounds like a good news to me, I want to find a place and save up my stem cell as soon as possible.

Lung Cancer

https://docs.google.com/document/d/1y4V_Ez0jWxwuv8CFth29o82r6J-G2mFn1U-9tOxJmAs/edit

Mitosis and Meiosis

Cell division and reproduction can occur in two ways - mitosis and meiosis.

Mitosis is a process of cell duplication, or reproduction, during which one cell gives rise to two genetically identical daughter cells.

Meiosis, on the other hand, is a division of a germ cell involving two fissions of the nucleus and giving rise to four gametes, or sex cells, each possessing half the number of chromosomes of the original cell.

Mitosis is used by single celled organisms to reproduce; it is also used for the organic growth of tissues, fibers, and membranes. Meiosis is useful for sexual reproduction of organisms. The male and female sex cells, e.g. the spermatozoa and egg, fuse to create a new, singular biological organism.

Process Differences
Different Stages of Mitosis and Meiosis
Differences in Purpose

Mitosis is a method of reproduction for single celled organisms that reproduceasexually. An identical version of the organism is created through splitting of the cell in two. Meiosis may result in millions of spermazoa and egg cells with unique genetic patterns. The mating of the two cells formed by meiosis results in a unique genetic offspring of the same species. Meiosis is a major factor in evolution, natural selection, and biodiversity. The processes of cellular division shown in mitosis and meiosis are present in all manner of life forms including humans, animals, plants, fungi, and single celled organisms and species. Essentially any cell based organism of which all organic life is based will exhibit some form of mitosis and meiosis for growth and reproduction of the individual and species.

The different phases of meiosis are: Prophase, Metaphase, Anaphase and Telophase.

Both Meiosis and Mitosis are found in complex organisms which reproduce sexually. Mitosis may be used for human growth, the replenishment of depleted organs and tissues, healing, and sustenance of the body. Identical versions of cells can be created to form tissues through Mitosis. Meiosis is a special process reserved for the creation of the egg and sperm cells. The same patterns may be found in many species of plant and animal cell reproduction.

Significance

Meiosis	Mitosis
Definition	A type of cellular reproduction in which the number of chromosomes are reduced by half through the separation of homologous chromosomes, producing two haploid cells.	A process of asexual reproductionin which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell.
Function	sexual reproduction	Cellular Reproduction & general growth and repair of the body
Type of Reproduction	Sexual	Asexual
Occurs in	Humans, animals, plants, fungi	all organisms
Genetically	different	identical
Crossing Over	Yes, mixing of chromosomes can occur.	No, crossing over cannot occur.
Pairing of Homologs	Yes	No
Number of Divisions	2	1
Number of Daughter Cells produced	4 haploid cells	2 diploid cells
Chromosome Number	Reduced by half	Remains the same
Steps	The steps of meiosis are Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II and Telophase II.	The steps of mitosis are Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis
Karyokinesis	Occurs in Interphase I	Occurs in Interphase
Cytokinesis	Occurs in Telophase I & Telophase II	Occurs in Telophase
Centromeres Split	The centromeres do not separate during anaphase I, but during anaphase II	The centromeres split during Anaphase
Creates	Sex cells only: Female egg cells or Male sperm cells	Makes everything other than sex cells

The importance of mitosis is the maintenance of the chromosomal set; each cell formed receives chromosomes that are alike in composition and equal in number to the chromosomes of the parent cell.

Your Inner Fish 6

Ectoderm: outer part of the body and nervous system
Endoderm: the inside layer, inner structures of the body
Mesoderm: our skeleton and our muscles.

Cell Tour

http://prezi.com/vt7bo_4oy0ns/?utm_campaign=share&utm_medium=copy