Embryos Pre-Implantation Genetic Diagnosis - 1121 Words

What PGD is: Pre-Implantation Genetic Diagnosis is a procedure used before implantation to identify genetic defects within embryos. It is used to prevent certain genetic diseases or disorders from being passed on to the child by detecting irregularities in the number or structure of embryo chromosomes. The embryos used in the process are generally created through in vitro fertilisation and PGD is used with an IVF cycle to increase the potential for a successful pregnancy and delivery. PGD refers specifically to when one or both genetic parents have a known genetic abnormality. PGS refers to techniques where embryos from chromosomally normal genetic parents are screened for aneuploidy (Abnormal number of chromosomes in a cell.) PGD and PGS†¦show more content†¦These cell’s genetic material which consists of DNA or chromosomes within these cells are then tested for genetic or chromosomal abnormality, the unaffected embryos are then transferred to the woman’s uter us to implant. The techniques used to test for these abnormalities include fluorescent in situ hybridization (FISH), single- nucleotide polymorphism (SNP) and the newer approaches such as Comparative genomic hybridization (CGH) and next generation sequencing (NGS) and PCR. These techniques are constantly evolving to be more accurate and more informative. These techniques are used to test for genes that may produce specific diseases but can only check for diseases which have a genetic component. Why: The driving force behind the development of PGD was to determine the sex of the embryo, but the technology enabled doctors to determine possible genetic abnormalities, diseases and disorders. PGD is used mainly to treat parents that have genetic abnormalities, diseases and disorders or parents with higher risks of having these, but it is becoming commonly recommended for older women who due to their age are at a higher risk of giving birth to a baby with a genetic abnormality or disease. PGS sprung off the development of PGS and is now becoming commonly used by parents who would rather have their embryos tested for a genetic disease or disorder before implantation, as the other option ofShow MoreRelatedArgumentative +/- Pre-Implantation Genetic Diagnosis1001 Words   |  5 Pagesthat you re having trouble conceiving because of a genetic abnormality you never even knew you had. Your mind races and your heart sinks. How is this possible? You never thought you would have to deal w ith not being able to have a baby one day. There are several options you have to try and conceive without passing on the genetic abnormalityÂ… the doctor continues to explain, but the one I would recommend first is Pre Implantation Genetic Diagnosis. You and your wife finally decide on PGD, a typeRead MoreThe Benefits of Human Genetic Engineering Essay1654 Words   |  7 PagesPre-implantation genetic diagnosis is a revolutionary procedure that utilizes in vitro fertilization to implant a healthy egg cell into the mother’s uterus after it is screened for mutations or other abnormalities. That way, only healthy eggs can develop to term and become beautiful, bouncing boys or girls. Designer babies have a bright future in the face of science because they are genetically engineered to be: disease free; viable donors for a sibling or parent; and with optional eliminationRead MoreVitro Fertilisation ( Ivf ) Essay1402 Words   |  6 Pagesfertilisation to take place outside the body. The resulting embryos are grown in the laboratory over 2 – 5 days before being transferred back into the woman’s uterus increasing the chance that a pregnancy will occur. Pre-implantation genetic diagnosis (PGD) is a screening test used to determine if genetic or chromosomal disorders are present in embryos produced through in vitro fertilization (IVF). Preimplantation genetic diagnosis screens embryos before they are transferred to the uterus so couples canRead MoreEssay On IVF Treatment1484 Words   |  6 Pagesoccur before PGD. Embryo development occurs on day 3 when a small hole is made in the soft shell of the embryo (Zona Pellucida) using a laser. On day 5, one or more cells are removed from each embryo (embryo biopsy). The embryos are then frozen and cells are sent to a PGD laboratory for analysis. The cells are tested from each embryo which informs them which embryos are normal. Normal embryos are thawed and transferred to the woman later. Demand Pre-implantation genetic diagnosis is in high demandRead MoreGenetic Engineering The Perfect Child Essay example1024 Words   |  5 Pagesand technology, couples are now able to genetically modify embryos to create their ideal children. From gender, to eye color, hair color, height, body shape, and more, modern parents have the ability to leave little up to nature and take the designing of their child into their own hands. Whether it is ethical, or not, to engineer designer babies is a highly controversial topic with numerous pros and cons. Pre-Implantation Genetic Diagnosis (PGD) is the contentious technology fertility specialistsRead MoreUsing Ivf ( Vitro Fertilisation )1503 Words   |  7 Pagesx PDG stands for Pre Implementation Genetic diagnosis it is a technique used to help examine and recognise a specific genetic defect within embryos created using IVF (In-Vitro Fertilisation). This technology is performed to prevent disorders or diseases being passed on to the child. The ultimate aim for couples attempting to use PGD is to produce an offspring free of chromosomal genetic defects. In New Zealand this technology is very limited and every application must be sought through and gain approvalRead MoreAn Immoral Injustice: Designer Babies702 Words   |  3 Pagesgene-enriched (Preface to Genetic Enhancement of Human Abilities n.p.). The gene-enriched refers to people with designer genes chosen by parents who have had the same done to them. This technology will first prevent birth defects and later diabetes and hea rt disease. As artificial genes develop to be common, the technology may be used to prevent drug and alcohol addictions, mental diseases, and eventually to create humans with synthetic characteristics (Preface to Genetic Enhancement of Human AbilitiesRead MoreResearch On Stem Cell Research1731 Words   |  7 Pagesstem cell research would cease to exist. Prior to what has become known as stem cell research, scientists began studying embryonic stem cells using mouse embryos in 1981, which makes stem cell research a fairly new topic of interest. It is through this research on mice that has given scientists the ability to collect stem cells in human embryos and further â€Å"grow the cells in [a] laboratory† (National Institutes of Health 2002). Although now possible, this research on human stem cells did not occurRead MorePGD Essay1127 Words   |  5 PagesWhat is PGD? The demand for Pre-implantation Genetic Diagnosis (PGD) involves people that have genetic or chromosomal disorder, either personally or in their genetic makeup, who desire a healthy baby that doesn’t acquire the genetic or chromosomal disorder for example; Cystic Fibrosis and Huntington’s Disease. Preimplantation genetic diagnosis with assistants from IVF meets this demand. PGD is a reproductive option for those who do not want to pass on specific genetic disorders or chromosome imbalanceRead MorePlaying God in Medicine Continues to be Acceptable Essay1424 Words   |  6 Pagesdiagnose flawed DNA in pre-implantation embryos, empowering humans to create a stronger, healthier child. Scientists place a new/modified gene into a virus like organism that enters the cell and inserts the new gene. Genetic modification is utilized to correct defective genes that lead to disease or genetic disorders; in simple terms, manipulating human genes to provide a brighter genetic future for humanity. In the future we may also be able to cure genetic diseases in embryos by replacing faulty

Dc Ielts Essay Samples Explained

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Deception Point Page 56 Free Essays

â€Å"He’s breaking the law,† Gabrielle said. Isn’t he? â€Å"Or so Marjorie Tench would have you believe. Candidates accept behind-the-scenes donations all the time from big corporations. We will write a custom essay sample on Deception Point Page 56 or any similar topic only for you Order Now It may not be pretty, but it’s not necessarily illegal. In fact, most legal issues deal not with where the money comes from but how the candidate chooses to spend it.† Gabrielle hesitated, feeling uncertain now. â€Å"Gabs, the White House played you this afternoon. They tried to turn you against your candidate, and so far you’ve called their bluff. If I were looking for someone to trust, I think I’d stick with Sexton before jumping ship to someone like Marjorie Tench.† Yolanda’s phone rang. She answered, nodding, uh-huh-ing, taking notes. â€Å"Interesting,† she finally said. â€Å"I’ll be right there. Thanks.† Yolanda hung up and turned with an arched brow. â€Å"Gabs, sounds like you’re off the hook. Just as I predicted.† â€Å"What’s going on?† â€Å"I don’t have a specific yet, but I can tell you this much-the president’s press conference has nothing to do with sex scandals or campaign finance.† Gabrielle felt a flash of hope and wanted badly to believe her. â€Å"How do you know that?† â€Å"Someone on the inside just leaked that the press conference is NASA-related.† Gabrielle sat up suddenly. â€Å"NASA?† Yolanda winked. â€Å"This could be your lucky night. My bet is President Herney is feeling so much pressure from Senator Sexton that he’s decided the White House has no choice but to pull the plug on the International Space Station. That explains all the global media coverage.† A press conference killing the space station? Gabrielle could not imagine. Yolanda stood up. â€Å"That Tench attack this afternoon? It was probably just a last-ditch effort to get a foothold over Sexton before the President had to go public with the bad news. Nothing like a sex scandal to take the attention away from another presidential flop. Anyhow, Gabs, I’ve got work to do. My advice to you-get yourself a cup of coffee, sit right here, turn on my television, and ride this out like the rest of us. We’ve got twenty minutes until show time, and I’m telling you, there is no way the President is going Dumpster-diving tonight. He’s got the whole world watching. Whatever he has to say carries some serious weight.† She gave a reassuring wink. â€Å"Now give me the envelope.† â€Å"What?† Yolanda held out a demanding hand. â€Å"These pictures are getting locked in my desk until this is over. I want to be sure you don’t do something idiotic.† Reluctantly, Gabrielle handed over the envelope. Yolanda locked the photos carefully in a desk drawer and pocketed the keys. â€Å"You’ll thank me, Gabs. I swear it.† She playfully ruffled Gabrielle’s hair on her way out. â€Å"Sit tight. I think good news is on the way.† Gabrielle sat alone in the glass cubicle and tried to let Yolanda’s upbeat attitude lift her mood. All Gabrielle could think of, though, was the self-satisfied smirk on the face of Marjorie Tench this afternoon. Gabrielle could not imagine what the President was about to tell the world, but it was definitely not going to be good news for Senator Sexton. 65 Rachel Sexton felt like she was being burned alive. It’s raining fire! She tried to open her eyes, but all she could make out were foggy shapes and blinding lights. It was raining all around her. Scalding hot rain. Pounding down on her bare skin. She was lying on her side and could feel hot tiles beneath her body. She curled more tightly into the fetal position, trying to protect herself from the scalding liquid falling from above. She smelled chemicals. Chlorine, maybe. She tried to crawl away, but she could not. Powerful hands pressed down on her shoulders, holding her down. Let me go! I’m burning! Instinctively, she again fought to escape, and again she was rebuffed, the strong hands clamping down. â€Å"Stay where you are,† a man’s voice said. The accent was American. Professional. â€Å"It will be over soon.† What will be over? Rachel wondered. The pain? My life? She tried to focus her vision. The lights in this place were harsh. She sensed the room was small. Cramped. Low ceilings. â€Å"I’m burning!† Rachel’s scream was a whisper. â€Å"You’re fine,† the voice said. â€Å"This water is lukewarm. Trust me.† Rachel realized she was mostly undressed, wearing only her soaked underwear. No embarrassment registered; her mind was filled with too many other questions. The memories were coming back now in a torrent. The ice shelf. The GPR. The attack. Who? Where am I? She tried to put the pieces together, but her mind felt torpid, like a set of clogged gears. From out of the muddled confusion came a single thought: Michael and Corky†¦ where are they? Rachel tried to focus her bleary vision but saw only the men standing over her. They were all dressed in the same blue jumpsuits. She wanted to speak, but her mouth refused to formulate a single word. The burning sensation in her skin was now giving way to sudden deep waves of aching that rolled through the muscles like seismic tremors. â€Å"Let it happen,† the man over her said. â€Å"The blood needs to flow back into your musculature.† He spoke like a doctor. â€Å"Try to move your limbs as much as you can.† The pain racking Rachel’s body felt as if every muscle was being beaten with a hammer. She lay there on the tile, her chest contracting, and she could barely breathe. â€Å"Move your legs and arms,† the man insisted. â€Å"No matter what it feels like.† Rachel tried. Each movement felt like a knife being thrust into her joints. The jets of water grew hotter again. The scalding was back. The crushing pain went on. At the precise instant she thought she could not withstand another moment, Rachel felt someone giving her an injection. The pain seemed to subside quickly, less and less violent, releasing. The tremors slowed. She felt herself breathing again. A new sensation was spreading through her body now, the eerie bite of pins and needles. Everywhere-stabbing-sharper and sharper. Millions of tiny needle-point jabs, intensifying whenever she moved. She tried to hold motionless, but the water jets continued to buffet her. The man above her was holding her arms, moving them. God that hurts! Rachel was too weak to fight. Tears of exhaustion and pain poured down her face. She shut her eyes hard, blocking out the world. Finally, the pins and needles began to dissipate. The rain from above stopped. When Rachel opened her eyes, her vision was clearer. It was then that she saw them. Corky and Tolland lay nearby, quivering, half-naked and soaked. From the looks of anguish on their faces, Rachel sensed that they had just endured similar experiences. Michael Tolland’s brown eyes were bloodshot and glassy. When he saw Rachel, he managed a weak smile, his blue lips trembling. Rachel tried to sit up, to take in their bizarre surroundings. The three of them were lying in a trembling twist of half-naked limbs on the floor of a tiny shower room. 66 Strong arms lifted her. Rachel felt the powerful strangers drying her body and wrapping her in blankets. She was being placed on a medical bed of some sort and vigorously massaged on her arms, legs, and feet. Another injection in her arm. â€Å"Adrenaline,† someone said. Rachel felt the drug coursing through her veins like a life force, invigorating her muscles. Although she still felt an icy hollowness tight like a drum in her gut, Rachel sensed the blood slowly returning to her limbs. Back from the dead. She tried to focus her vision. Tolland and Corky were lying nearby, shivering in blankets as the men massaged their bodies and gave them injections as well. Rachel had no doubt that this mysterious assemblage of men had just saved their lives. Many of them were soaking wet, apparently having jumped into the showers fully clothed to help. Who they were or how they had gotten to Rachel and the others in time was beyond her. It made no difference at the moment. We’re alive. How to cite Deception Point Page 56, Essay examples