Philadelphia chromosome

genetic information in cells separating during meiosis, resulting in sex cells of an organism carrying a single copy of the parent’s genetic information . Cells have two copies of genetic information stored in theirevery chromosomes. Each chromo carries one copy of each gene. Chromosomes that make up the allele can be the same or differ from each other . Alleles that have two copies of the same trait are homozygous. If the alleles differ the cell will express the dominant trait phenotypically,…

Although Down syndrome is used as a general term, several forms of this syndrome exist. Trisomy 21 is considered one of the most common genetic chromosomal disorders in the world. This year alone, approximately 6000 children within the United States will be born with this genetic disorder. Trisomy 21, also known as Down syndrome is defined as a set of physical and mental traits caused by an abnormal gene mutation that happens before birth. This genetic disorder varies in severity, causes…

Fragile X. Although it may sound similar to a portion of Area 51, Fragile X, also known as FXS or Martin Bell Syndrome, is a serious condition which affects over 200,000 americans each year. Being a quite common gene disease, FXS is known to affect men more than the opposite female gender. In addition to education and physicality, adolescents with this disease also battle the effects of their condition as well as the challenges they face in everyday life. Over the years, Fragile X has…

procedure that allows to replace a small amount of defective DNA in mother’s egg with a normal DNA from a second woman, therefore babies inherit genes from two mothers and one father. Consequently, the resulting baby has 20,000 genes on 23 pairs of chromosomes from its mother and father. The donor donates only DNA that is in mitochondria (less than 0.2% of total DNA). Two mitochondrial transfer techniques exist, both use in vitro fertilization (IVF) (Ian Sample, 2015). The first is maternal…

than people think. There are many fascinating facts about this condition that are not in the common knowledge! Downs’ syndrome is a genetic disorder which is caused by an error in cell division that results in the presence of an extra copy of chromosome 21. Most of the time the error occurs at random during the formation of an egg or sperm. Research shows that there are three types of chromosomal changes that can lead to Downs’ syndrome. The first type is mosaic trisomy 21. Mosaic trisomy 21…

Wolf Hirschhorn Syndrome (WHS) is a genetic disorder caused by a deletion (the removal or obliteration of written or printed matter) in the genetic material near the short (p) arm of chromosome 4 (also written as 4p). The Genetic Home Reference tells us that “ there are two copies of chromosome 4, one copy inherited from each parent” (Genet). However big or small the individual with WHS is, then the size of the deletion changes. The bigger the deletion the more severe the symptoms become…

that will be explored regarding the hypothesis and the findings is “A Gene Mystery: How Are Rats with No Y Chromosome Born Male?” By Steph Yin. This article was published by the New York Time on May 12, 2017. The main topic of this article is the endangered Amami spiny rats which are found in Japan. These rats are the focus of the experiment because these rats have lost their “Y chromosome and as well have lost the gene SRY (which is considered the master switch of male anatomical development in…

the accuracy of the relative times found in the experiment because there was no information available the time taken in interphase compared to the other cells is probably correct. This is because in interphase a cell must grow and duplicate its chromosomes which takes a long time. The other times are also probably accurate because in phases like telophase and anaphase the cell simply splits and does not need to grow or change. The data that was collected is not reliable.…

What Is It? Down syndrome is a mutation caused when cell division is abnormal and results in one extra copy of chromosome 21. Originally forming in egg cells, and not passed on genetically but as a mutation, Down Syndrome is known as the disorder that occurs when an extra copy of the twenty-first chromosome is made during formation of the egg and sperm. Down syndrome is a lifelong condition in which a person is born with distinct physical features and some degree of cognitive disability. Since…

Wenonah/Canton/Apogee 903 Owner Louis Paolino. Jr. A graduate of Drexel University in Philadelphia, Pennsylvania Louis Paolino, Jr., holds a bachelor of science in civil engineering. Early in his career he owned and operated two different Philadelphia-based soil cleaning organizations. He sold Girard Point Transfer to Mid-American Waste Systems for $12 million in 1990 and USA Waste Services for $20 million in 1993. Other highlights of Louis Paolino Jr.’s career include serving nearly a decade…