characteristics. In Down syndrome a mistake during division of the sperm or egg cell produces a cell with an extra chromosome 21. This event occurs during cell division and is referred to as nondisjunction‚ or the failure of all chromosomes to separately properly resulting in retention of one of the chromosomes in one of the two new daughter cells. This is also called trisomy 21 and is accounted for 95% of all Down syndrome patients. A rare number of Down syndrome cases the original egg and sperm cells
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NORMAL LEVEL-TWO ULTRASOUND SCAN Ultrasound examination during should include a systematic evaluation of fetal anatomy. Apart from anencephaly‚ the fetal organs cannot be accurately measured before 17-18 weeks of gestation. After 30-35 weeks‚ evaluation becomes increasingly difficult. Hence level-two ultrasound scan is done at 18 to 20 weeks of gestation. CLASSIFICATION OF FETAL SONOGRAPHIC EXAMINATIONS 1. First-Trimester Ultrasound 2. Standard Second- or Third-Trimester Ultrasound
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DOWN SYNDROME Down Syndrome is a congenital disorder arising from a chromosome It comes from a defect involving chromosome 21. The condition leads to impairments in both cognitive ability and physical growth that range from mild to moderate developmental disabilities. Through a series of screenings and tests‚ Down syndrome can be detected before and after a baby is born. The only factor known to affect the probability of having a baby with Down syndrome is maternal age. Less than one in 1‚000
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experience. Is this nature‚ nurture‚ or an interaction? Interaction Justify your answer: Chauncey is afraid of the pool because of an experience or interaction that he has had with water. Moriah Moriah was born with Down Syndrome (Trisomy-21). Is this nature‚ nurture‚ or an interaction? Nature Justify your answer: Down Syndrome is a condition related to chromosomes. Patrick and Erick Patrick and Erick are identical twins. They were separated at birth‚ but then were
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Unit 6 Assignment Shana Howell CE-240-01 Down Syndrome Characteristics of this disability: Also known as Trisomy 21 Small ears Short stature Short little fingers that curve inward Small round heads Attention Deficit Hyperactivity Disorder Characteristics of this disability: Short attention span Excessive activity Trouble organizing Talks excessively Fails to complete task Autism/Autistic Disorder Characteristics of this disability: Avoids eye contact Repeat
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character Tom has Down syndrome. Tom struggles with communicating with girls‚ coping with the death of his biological parents‚ and meeting people that accepts his disability. He later finds friends with the same disability and the girl of his dreams. Trisomy 21‚ known as Down syndrome is a condition in which extra chromosomes cause delays in the way a child develops mentally and physically. (Webster) Tom was bullied by many people because of his looks. Not everyone with Down syndrome looks the same‚ but
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Step # 1 Why does evolution matter now? The subject of this video is an explanation on how our understanding of evolution is crucial to our treating and surviving disease brought on by viruses‚ bacteria and other microbes we deal with in our everyday lives. The example that I felt was the most powerful in this film was the illustration on how a resistant strain tuberculosis outbreak in a prison in Russia can have an effect on a people half way around the globe‚ in this era of globalization
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When discussing bioethical considerations‚ life-support technology‚ and other ethical issues in medical decisions‚ I have to begin by drawing upon my own experience as a pediatric nurse‚ and the outcomes of many of my patients. In particular‚ my final position before retiring was caring for several infants with hypoplastic left heart syndrome‚ both in the home and as support of the family during hospitalizations. However‚ the skilled-nursing home care was to help keep hospitalizations at a minimum
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Non-Disjunction Causes and Effects Overview This paper shows the basis of non-disjunction of chromosome‚ a failure of chromosomes to separate properly during cell division. It emphasizes particularly on how the reproductive cells or gametes is created during reproduction. The gametes of women are eggs and of men are sperms. When the egg and the sperm combine during fertilization at conception‚ they create a normal offspring with the proper number of chromosomes of 46. Nondisjunction occurs when
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Meiotic Mysteries By: Karen Schindler In class we went over the cycle of meiosis‚ the sexual life cycle‚ and its stages. Meiosis has four stages which are‚ prophase I‚ metaphase I‚ anaphase I‚ and telophase I. In an adult before ovulation the oocyte goes back to meiosis forming a meiotic spindle of microtubules to segregate homologous chromosomes. When it reaches fertilization‚ the egg itself undergoes a second round of division segregating sister chromatids. Which is Prophase II‚ Metaphase II
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