DNA Technology and Genetic Disorders

1. DNA Technology and Genetic Disorders By Simon Lai

2. What is Deoxyribonucleic acid? • Biologically, Deoxyribonucleic Acid is a double-stranded, helical nucleic acid molecule capable of replicating and determining the inherited structure of a cell’s proteins. Is it hard to understand? In a much simple way to explain what is Deoxyribonucleic acid is: Deoxyribonucleic acid is the long form of DNA.

3. The importance of DNA has not only resolve the secret of human heredity • DNA technology also helps the scientists to determine some of the diseases and virus • SARS virus in Asia. From the daily news of one of the Hong Kong newspaper, the medication school of University Hong Kong found out the DNA of SARS infected patient DNA technology had launched a revolution in biotechnology’s are different from normal people.

4. DNA technology had launched a revolution in biotechnology. • In broad terms, biotechnology is the manipulation of organisms or their components make useful products. • Natural genetic processes, such as mutation and genetic recombination, have always been involved.

5. DNA is packed in a chromosome. • We have no idea and power to make any change of our genetics organization. • All of those syndromes are some kinds of the genetics disorders; they are from the errors in the chromosomal inheritance. • In these cases, one gamete receives two of the same type of chromosome and another gamete receives no copy.

6. For another type of genetics disorder • Most of these conditions appear to upset genetic balance less than aneuploidy conditions involving autosomes. • Rather than the normal male chromosome pattern, 46XY, there is an extra X chromosome. The result is the XXY arrangement.

7. Turner Syndrome is one of the rare diseases that affect only women. • Turner syndrome symptoms may be apparent at birth, the condition often isn't diagnosed until puberty. • In women suffering from Turner Syndrome, some of the genetic material on one of these chromosomes is missing, or an entire X chromosome may be missing.

8. For another type of genetic disorder • This kind of sexual genetic disorder only happens on a single sex. • Klinefelter syndrome only affects on male because the sexual genetic order is XXY. • Klinefelter syndrome is estimated to occur in one out of 500 males, making it the most common sex chromosome variation.

9. Turner syndrome is one the rare diseases that affect only women. • It is caused by abnormal the sex chromosome. • Females who has turner syndrome have only one X chromosome is order of normally two X chromosome in the 23rd pair of chromosome; they are missing one sexual chromosome in their cells.

10. DNA technology is not only used onto the medication studies, and also on the agriculture studies. • We heard about GM food is one of the product under the genetic engineering study. • Some people against the GM food or Dolly, copy sheep, this is still the great discovery under the hard work of the scientist and the result of genetic engineering.

11. Worked Cited • American Association for Klinefelter Syndrome Information and Support. 2002<http://www.aaksis.org> • Klinefelter Syndrome and Associates. 2002 <http://www.genetic.org/ks/> • Turner Syndrome. November 19, 2002. <http://www.turner-syndrome.com> • Cold Spring Harbor Laboratory. DNA from the Beginning. 2002 <http://www.dnaftb.org> • Neil A. Campbell & Jane B. Reece. Biology 6th edition. Benjamin Cummings. (2002) • The National Fragile X Foundation. November, 2002. <http://www.nfxf.org/home.htm> • FRAXA Research Foundation. FRAXA Research Foundation – Fragile X. 2002. <http://www.fraxa.org>

12. Thank you Hi Joy Thank you your teach me this semester I have more fun and get a lot of idea in my research. Merry Christmas!!! And Happy New year!!!