Dela Cruz‚ Catherine V. Genetics and Evolution Prof. Genelita Garcia Obio‚ Mary Joy A. Written Report Stem Cell Technology Stem Cells – cells that have the ability to continuously divide and differentiate into various other kind of cells. Characteristics: * Simple‚ remain the same cell in constant environment * Continuous mitotic divisions * With proper stimuli/environment it can differentiate into various cells Classification: Type of cells | Description | Source
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some people are morally conflicted regarding one method of sourcing these cells. “The stem cells may be harvested from a three to five day old embryo called a blastocyst. The cells that are present inside these embryos are called specialized cells and form the organs such as the lungs‚ skin‚ heart‚ sperm‚ eggs‚ and other tissues. An alternate method of harvesting stem cells is from adults. In adult tissues‚ such as brain‚ muscle‚ and bone marrow‚ distinct groups of stem cells generate replacements for
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Introduction Genetic engineering may once have been a fantasy‚ but as of late it is within mankind’s grasp. This has elicited a multitude of reactions from around the world‚ and has perhaps slowed its progress. The controversy is further complicated when the futures of unborn children are entered into the equation. As Mark Greene phrases it‚ reproductive technologies “give us some influence over the evils that may be suffered by future people” (Greene 313). Is the use of reproductive technologies
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temperature the promoter gene from the ocean pout is switched on‚ thus the production of growth hormone. The antifreeze (AFP) gene is taken from the ocean pout which inhabit the waters close to the poles. In these areas water temperatures can reach below freezing‚ transgenic salmon will
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or chromosome abnormalities (such as Down’s syndrome) is any different with assisted reproductive technology than with natural conception.” (Society for Assisted Reproductive Technology) Success rates also depend on the number of embryos being transferred. More embryos transferred increases the chance of one attaching to the uterus‚ but it also poses the risk of multiples. The rate
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partner’s sperm in a petri dish. The fertilised embryos are relocated to your uterus. • •Intracytoplasmic sperm injection (ICSI) – An individual sperm is injected directly into a single egg in the laboratory and the resulting embryo is transplanted into your uterus. • •Donated sperm - If your partner has a very low sperm count‚ or produces no sperm at all‚ a donor can donate sperm which may be used for donor insemination or IVF. • •Donated eggs or embryos - If you are not able to conceive using your
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the recent biomedical research is “Human Stem Cell” from which all 210 different kinds of tissue in the human body originate(the Center for Bioethics and Human Dignity‚ 94). Additionally‚ UNESCO states that separating some inner cell mass from the embryo at the blastocyst stage‚ they can be cultured to produce pluripotent stem cells‚ capable of developing into blood ‚ muscle‚ or many other kinds of tissues and organs of the body (13). Thus‚ at first “Stem Cell” may sound hopeful for human life but
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are enthusiastic about stem cells because they have potential benefit in many different areas of health and medical research. Many scientists believe that embryonic stem cell research‚ which involves removing stem cells from early stages of human embryos and then transferring the cells into other cell types‚ may lead to new ways to fight diseases. Stem cells are one of the human body’s master cells that can provide powerful new methods for treating an array of medical disorders: spinal cord injuries
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seedlings grown at 24 degrees C. A marked increase in linolenic acid was also observed during growth at 2 degrees C‚ and this change occurred entirely in the embryo. The results indicate an increased synthesis and unsaturation of membranes in seedlings grown at 2 degrees C. The changes may contribute to the increased resistance to freezing temperatures exhibited by seedlings grown at 2 degrees C." The phospholipid bilayer is flexible or has fluidity. This prevents it from solidifying at colder
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fertilization has already led to a naive acceptance of the destruction of human embryos that now theaters to pave the way for embryonic stem cell research. The concept the in vitro fertilization tha one or more of the genetic parents are different from the woman who will carry the child‚ or the couple who will bring the child up. Sperm and eggs are being bought and sold and wombs are rented. One common reason for testing the embryos is the sex selection of the child(boy or girl). The legal problems that
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