Y chromosome

Rett Syndrome Rett Syndrome is an uncommon neurodevelopmental disorder that is first discovered when a child is still an infant. This disorder is mostly found in girls, rarely is it ever found in boys. Rett Syndrome cannot be inherited from an early on ancestor, and statistically this syndrome affects one in every 10,000 to 20,000 children. Rett Syndrome has many side effects such as, teeth grinding and delayed development. Rett Syndrome is named after a physician and author who first discovered…

The world is a very strange place, filled with many strange disorders and diseases, but the strangest of them all is Lesch-Nyhan Syndrome. This rare genetic disorder mostly affects males and is characterized by a variety of symptoms, which include “self-mutilation, hyperuricemia, choreoathetosis, and mental retardation.” (Wilson and Roy 1) The first documented case of Lesch-Nyhan Syndrome was in 1962, when a mother brought in her son (who was diagnosed with cerebral palsy), because he was…

We are began as a single cell, but by the time that we are an adult, we have trillion of cells in our body. This happen because our cells are constantly dividing and when they divide they make new cells. A group of cells form a tissue, a tissue form the organ, an organ compound the system of organ and then the individual. We all have this question, why our cells are dividing constantly? Cells divide to replace old or damaged cells, and also living organism can grow and reproduce. There are two…

still ongoing. The frequency of a child with progeria is one in four million newborns. 200-250 children in the world are living with progeria. The disease affects both male and female and all races. The inheritance of progeria is not on a sex chromosome and its dominant which means one copy of the gene in each cell is sufficient to cause progeria. Almost always occurs in people with no history of the disorder. The gene change is almost always a chance but is extremely rare. Chances with a…

those who do not. There are many types of Down syndrome, symptoms, diagnostic tests, and complications that characterize people who have Downs. But as shown, they are not as different to everyone else as some people may think, besides the extra 21st chromosome and a few other features. These can include physical characteristics, intellectual struggles, and a few diseases that they are more susceptible to. However, these difficulties can be cured and helped with medication, tutoring, and other…

Introduction Children, adolescents and adults suffer from a mental and physical disorder known as Down syndrome. This disorder is due to an extra chromosome in their genes which is the leading cause. However, a specific chromosome can also be damaged during cell replication, which can also increase their risk of getting Down syndrome and other disorders later on in their life that could eventually lead to death if not treated at the right time. Also, if a mother gives birth at a higher age, it…

1. Why do you think the roots of plants are good for studying Mitosis? In my biased opinion, I believe that the roots are suitable for studying mitosis because plants always undergo mitosis. 2. Why does the root tip of the onion need to be stained? The root tips of the onion need to be stain because they provide more visibility when looking under a microscope. 3. How many phases are in the Cell Cycle? There are five stages of the cell cycle which would be Interface, Prophase, Metaphase,…

Kristina Sebastian Ms.Donatella Biology The Mysterious Disease of Patient X Sickle cell disease is a group of a red blood cell disorder that affects the hemoglobin typically inherited from one's person's parents or relative . The most common type would be sickle cell anemia ; cause by a shortage of red blood cells in the human body . Most people don't know if they have sickle cell disease, which you can get test for . Patient X had a sickle cell disease so he did not have an idea he had the…

ichael explains his case in a creative way. He has Down syndrome when the chromosomes came to make him, a normal chromosome broke, the broken piece moved and struck onto another chromosome.Its called spontaneous translocation.No one knows why this happens or how to prevent it. He starts to talk like how he is like everyone else. All he does is learns things a different way. It takes him longer to process information and form his thoughts and communicate with others. He gets frustrated when…

Have you ever wondered about Down Syndrome and what exactly causes it, or even the health problems that these children and adults face? Down Syndrome, often known as DS, is a genetic condition which is caused by an extra chromosome. Down Syndrome is also the most common genetic disorder. There is no way of preventing Down Syndrome, although genetic counseling is available to figure the odds of having a baby with Downs. Over the course of many years, more tests and screenings have become…