Fragile X Syndrome and effects on learning and development “Fragile X syndrome is the leading inherited cause of intellectual disability” (Lizbeth H. Finestack, 2009). A single gene mutation on the X chromosome causes the syndrome. It affects about 1 in 4,000 males and 1 in 6,000 to 8,000 females. (Prevention, Centers for Disease Control and, 2006). Fragile X syndrome, also known as Martin-Bell syndrome, was named after two men, Martin and Bell, who discovered, in 1943, that the condition is X-linked
This genetic disorder causes a mutation in the gene coding for the enzyme phenylalanine hydroxylase (PAH). Because there is a mutation in the PAH enzyme, Phe is not metabolized therefore leads to toxic amounts in the bloodstream and tissue. These toxic levels
The first step in genetically modifying cotton is to remove the gene Cry1Ac from the bacteria Bacillus thuringiensis using a specific restriction enzyme. A restriction enzyme cuts DNA strands at highly specific sites, diagonally, leaving some of the nucleotides from each strand exposed on either end of the required gene. These are called ‘sticky ends’, making it easier to attach the gene into another piece of DNA. The second step is to prepare a bacterium (agrobacterium tumerfaciens) to carry the
Gregor Mendel was born to Anton and Rosine Mendel in Heizendorf, Austria on their small family farm in 1822. He lived the first few years of his life here on this farm until at age 11 a local schoolmaster, impressed by his intellect, recommended that he continue his studies in a high school in Troppau. Though the move was a financial strain on the family, Mendel thrived intellectually and graduated high school in 1840 with honours. Following school, he enrolled in a 2 year programme at the Philosophical
Introduction Drosophila melanogaster, also known as the fruit fly, is an extraordinary organism that has been used for genetic experimentation due to its fast life cycle and the fact that it is very inexpensive to acquire and feed. The Drosophila life cycle is short and completed within 10-15 days. It begins with an egg that produces larvae, becomes pupa and eventually develops into an adult. After roughly ten hours after emerging, adult flies are ready for mating. 24 hours after mating, the females
I. Introduction In this lab we examined the cross over Frequencies of the Sordaria to see what influences crossing over during meiosis. Crossing over is when there is a physical exchange of genetic information between two homologous chromosomes. Crossing over is random and creates genetic diversity. Genetic diversity is essential to organisms so they can evolve and adapt to changes in the environment. To explore crossing over even further, researchers decided to study the Sordaria Fimicola. They
sections will be subject to grow Brassica rapas plants. Brassica rapas grow at fast rate and are ideal for the Mendelian Genetics. Each pair of students will plant and grow F1 generation seeds. Once, grown the students will attempt to isolate the Anthocyanin in F2 generation plants. If anthocyanin is inherited as a dominant trait, then the F2 generation will follow Mendelian genetics resulting in a 3:1 phenotypic ratio. The results suggest that there was a statistical
(Grade: / ) Extracting strawberry DNA By: Hunter Marshall and Jack Sloan Objective: The main objective is to extract and observe the DNA from the strawberry. Another objective is to gain knowledge of the process of DNA extraction as well the properties of DNA in mass quantities to help us understand what scientists will do in order to help cure patients. Also, to conduct the lab safely and efficiently achieving clear results. Another objective is to see how all the DNA varies between strawberries
For the Sake of Mankind In “Ethics and the New Genetics” the Dalai Lama addresses the issues presented by advancing technology today. The Dalai Lama does this by discussing and questioning moral responsibilities when faced with higher levels of knowledge and power ultimately revealing the need for compassion as the key motivation in all our endeavours (139). The first issue addressed in the essay is genetically modified food. Genetically modified food is beneficial because it can increase food
Certain traits are passed on through generations so that a population can survive, but there are many situations where this can apply, but the most common to people today is animals. These animals have to adapt so that they can avoid being eaten. Certain traits are more common in a population because the traits increase an individual’s probability to survive and reproduce. When I was playing the Darwin game, you had to adjust the animals so that they could survive in different situation. The seahorse