A baby is defined as viable when he/she is capable of surviving outside the mother’s womb and is able to develop independently. As described on page 70 in the textbook, a small percentage of babies become viable around 23 weeks. However, it is very difficult for all the newborn’s organs to become fully self-sufficient outside of the womb at this stage. A newborn that is born at 23 weeks is more likely to struggle with respiratory function and have underdeveloped brain structures as they must further develop outside the safety and support of the womb. Therefore, on average, true viability is reached at 24 weeks with further development and increased survival odds. 2. If a child is born with Down syndrome, what kind of condition do they have? Genetically speaking, why does the child have Down syndrome? What are two challenges that the child has a higher risk of? (3 points) A child that is born with Down syndrome has a condition called trisomy 21. The term trisomy is described as the chromosomal error that results in a specific chromosome to have three copies. Therefore, in a case of Down syndrome, there are three copies of chromosome 21 in their DNA. A child with Down syndrome has a higher risk of hearing loss, heart abnormalities, and hypothyroidism. 3. What are 3 things that impact the wellbeing of the baby that the mother can do before the child is born? What are potential outcomes of these activities? (3 points) The choices that a mother make while pregnant can greatly
The genetic disorder of Trisomy 21, or Down syndrome is one that has often interested me. I understand that many children born with his genetic disorder can in fact live a full life, often with assistance. When answering the question of what exactly Down syndrome is, a good definition can be one describing this disorder as a genetic condition where a person has an extra 21st chromosome. The typical person has 46 chromosomes, therefore the person born with Down syndrome has 47. This extra chromosome brings with it some physical and cognitive characteristics that include mild to severe cognitive delay, low muscle tone, stunted growth, an easily identifiable upward slant to the eyes, generally a deep crease across the center of the palm and the appearance of a flat face. We have to keep in mind however, that each person with Down syndrome is an individual and might have some of these characteristics to different degrees, or possibly none at all.
One of the most common genetic birth defects is Down syndrome which is a congenital disorder caused from a chromosome defect. It causes impairments and physical abnormalities. This is a condition where a child is born with an extra copy of their 21st chromosome. According to the National Down Syndrome Society (NDSS), 1 in 700 babies are born with DS. There is not an exact cause of how DS happens but there is an explanation as to what happens. When there is any case of reproduction, genes from both parents are passed to the children. Within these genes there are chromosomes and the child is supposed to receive 23 pairs of chromosomes or 46 total. Children with DS end up with 3 copies or an extra partial copy of chromosome 21 instead of 2
Down syndrome (also known as trisomy 21) is a disorder that makes you physically and mentally more challenged than everyone else but you are still able to grow develop and live a partially normal life. The major causes of Down syndrome are first just getting unlucky and having the 21st chromosome be irregular. But if you have a child when you are older than 35 you have a highly increased chance of getting down syndrome also if you have a sibling with Down syndrome or another kid with-it that can also increase the chance of getting down syndrome. Some symptoms of this disorder are, you can be physically less capable than others can and can have a hard time remembering things and can possibly not be able to achieve what seems to be easy things to do daily. However, most important, they only live to about 80. In addition, they can have a hard time reproducing but can still can reproduce.
Symptoms of down syndrome are the following Flat facial features, Small head, Short neck, Protruding tongue, Upward slanting eyes, that is unusual for the child's ethnic group, Unusually shaped or small ears, Poor muscle tone. Broad, short hands with a single crease in the palm, Relatively short fingers and small hands and feet, Excessive flexibility. Tiny white spots on the colored part or the iris of the eye called Brushfield spots, Short height. Infants and children with down syndrome may be average size at birth , but typically they grow slower and remain shorter than other children the same age. In general, developmental milestones, such as sitting, crawling or walking may occur at about twice the age of child without impairment. People with down syndrome also suffer from cognitive delays. People affected by down syndrome varies greatly, it can happen to anyone, although more common in pregnant mothers 35 years or older. the cause of down syndrome is due to having an extra chromosome, therefore it is a disorder that happens 99% randomly and only 1% genetically. Unfortunately there is no cure, treatment or prevention for down syndrome as of today, but scientists are continuing to research for a cure. People with Down Syndrome live healthy, active lives and can function in an everyday environment.
When one thinks of a baby born prematurely many imagine a tiny one-pound baby barely able to live even with all the ventilators and machines hooked up to it. They imagine a baby that will be under weight and unable to leave the hospital for many months to come. Few will know the risk factors that come along with being preterm, and even less will know that preterm babies are just as capable of living healthy and normal lives. “Every child develops in their own unique way, and your baby 's development will depend on a range of factors, including his genetic make-up, and the environment and influences around him” (https://www.tommys.org).
Your child will also have the increased chance of congenital heart defect and pulmonary hypertension. Congenital heart defect changes the normal flood of blood through the heart, and pulmonary hypertension is when blood vessels become hard and narrow and maybe even crumble. This makes your heart work extra hard to pump blood through the lungs, this could lead to heart failure. Along with increased childhood risk of leukemia and an unstable upper spine. This mutation is negative because it takes longer to reach childhood milestones and your child will have trouble speaking. Also, your child a higher risk of heart problems. The risk of your child having down syndrome increases the older you get. At the age of 20 the risk of your child having down syndrome is a 1 in 1,450 chance, at age 30 the risk is 1 in 1,050. At age 40 the risk is 1 in 100. About 200,000 children get down syndrome every
Down syndrome is a genetic disorder and the most common autosomal chromosome abnormality in humans. Down syndrome occurs when an individual has a full or partial extra copy of chromosome 21. This additional genetic material alters of development and causes the characteristics associated with Down syndrome. The primary purposes of this article are to: establish the origin of the term Down syndrome; determine the possible causes of Down syndrome; Likelihood of having a child with Down syndrome; and treatments for humans diagnosed with Down syndrome.
of babies born with Down syndrome elevated by about 30 percent. The risk of a child having
In every cell in the body there is a nucleus and this is the location where genetic material lives. These genes are responsible for carrying the inherited traits that we get from our parents, in the form of chromosomes. Normally each cell contains a nucleus with a pair of 23 chromosomes, half of which come from mom and the other half coming from dad. The genotype in the example given is that of a person with Down syndrome. Down syndrome is a chromosomal disorder that results in learning disabilities and physical abnormalities. Most cases of Down syndrome are caused by an extra copy of chromosome 21. An extra chromosome, making 3 of one kind, is called a trisomy and the most common is trisomy 21. This may be a chromosome given to the child from the father but a portion of mothers can also pass the chromosome to the child, mothers that get pregnant over 35 years of age have been shown to pass on the chromosome. Physical appearance will lead a doctor to suspect a patient with Down syndrome but a blood test is needed to determine if the patient has the extra chromosome. Down syndrome can affect many parts of the body, there are
The possessor of this genotype has the genetic disorder called Down syndrome. Down syndrome is caused by this person having chromosome 21, which is also called Trisomy 21. There are different things you see in people with Down syndrome such as, different physical and mental traits. This genetic condition varies between each person with this genetic disorder. They all have similar features, but do not look the same.
Down syndrome is a genetic disorder that begins to develop at the cellular level after conception. All the cells in the human body contain a center, called a nucleus, in which genetic code of each human being is stored. This genetic material, known as genes, carries the codes responsible for all our inherited characteristics from the mother and the father. Genes are grouped along rod-like structures called chromosomes. The nucleus of each cell normally contains 23 pairs of chromosomes, half of which come from each parent. In Down syndrome, however, the cells usually contain not 46, but 47 chromosomes. The extra chromosome being a number 21. This excess genetic material, in the form of additional genes along the 21st chromosome, results in Down syndrome. Ninety-five percent of all cases of Down syndrome occur because there are three copies of the 21st chromosome; it is often referred to as "trisomy 21." Chromosomes are studied by examining blood or tissue cells. Individual chromosomes are identified, stained and numbered from largest to smallest. The visual display of the chromosomes is known as a “karyotype”. (Karyotype is the analysis of counting the chromosomes in each cell)
Down syndrome is a genetic defect attributed to an abnormality of the human chromosome 21. The National Down Syndrome Society (NDSS), a national advocate organization for the value, acceptance and inclusion of people with Down syndrome, notes that modern research has successfully identified three types of Down syndrome. The NDSS reports that Nondisjunction Trisomy 21, in which there are three copies of chromosome 21 instead of two, is the most common type of Down syndrome. Prior to or at the point of conception, a pair of 21st chromosomes in either the
First of all, it is important to define Down syndrome. Traditionally, people are born with 46 chromosomes, 23 from the mother and 23 from the father. Down syndrome usually occurs when a person is born with an extra copy of chromosome 21. There are, however, other instances where Down syndrome can take place. For example, a person with DS might have it where, “...an extra broken piece of a twenty-first chromosome is attached to another chromosome (called translocation pattern)” (Berk, 2014, p. 40), a parent can be a carrier of the disorder, or a mosaic pattern could occur. A mosaic pattern is where a problem occurs in mitosis, resulting in some cells with defective chromosomes (Berk, 2014). How, then, can a mother know if she has a child with DS?
Down syndrome, also known as Trisomy 21, is a genetic disorder. It is caused by an abnormality in the number of chromosomes. DNA (deoxyribose nucleic acid) chromosomes are originate in the cell and are comprised of genes, which decide hereditary traits (Epstein pg.199). If a person has an extra chromosome on chromosome number 21 out of 23 they will have Down syndrome. The extra chromosome may delay the growth of a child’s physical and mental development which may lead to mental retardation. Normally, a person has 46 chromosomes, and will receive 23 pairs of chromosomes from the mother and 23 from the father totaling 46. But someone with Down syndrome will have 47. Although many theories have been developed, it is not known what actually
A person that has Down syndrome may have some physical problems or disabilities. Some common physical problems are: short necks, poor muscle tone, a small head and an overall smaller body. Approximately one third of babies born with Down syndrome have heart defects, most of which are now