Chromosomes

and meiosis two. The guided question I answered was how does the process of meiosis reduce the number of chromosomes in a reproductive cell? It is important for scientists to answer this question because they need to learn how a reduction in chromosomes is very critical. Without it the two gametes during fertilization, the offspring would result in with two times the regular number of chromosomes. Scientist use models to demonstrate mitosis one, mitosis two, meiosis one, and meiosis two. A…

caused when someone, usually male, has two X chromosomes and one Y chromosome giving them forty seven and not the normal forty six chromosomes. Males normally have an X chromosome and a Y chromosome and females normally have two X chromosomes. When either the sperm or the egg has a pair of sex chromosomes doesn’t succeed in separating formation, thus there is an extra chromosome causing the DNA abnormality during fertilization. This extra sex chromosome will copy its abnormal DNA into every cell…

decrease in the devils population. The oldest strand of the tumor cell contains thirteen chromosomes, nine are recognizable and four of which are mutated "markers". When Pearse first examined the cancer cells, she discovered that the chromosomes were mangled: One pair of chromosomes was missing entirely, one lacked a partner, one was chomped off, and some leftover bits were jammed together into extra chromosomes. This is not uncommon in general for cancer cells. The comparisons amongst all the…

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…

Turner's syndrome is a rare condition that affects females. It results when a sex chromosome (X chromosome) is either missing or partially missing. Turner’s syndrome can cause a lot of different medical problems such as short height, puberty failure, heart defects, learning disabilities and social adjustment problems. It is sometimes diagnosed before birth, during infancy or during their early childhood. Occasionally the diagnosis is delayed until the teen or young adult years in those who have…

individuals. With DNA being so vital to everyday life it has several functions. One function is being the creator of chromosomes in our body. Chromosomes are groups of DNA that are tightly coiled in together. Humans have 23 pairs of chromosomes that make up our genetic mutation. For example, if a person is born with an XY chromosome that will be born a male, if they’re born with a XX chromosome they will be born a female. These chromosomal codes help scientist see and predict genetic mutation…

When sperm with no X chromosome unites with a normal egg to form an embryo, that embryo will have just one X chromosome rather than two. As the baby grows and the cells divide, the X chromosome will be missing from every cell of the baby's body. In some cases, both X chromosomes are present, but one is abnormal. It may be shaped differently or missing genetic material. The effects of the condition…

Chromosomal inheritance relates to how a person has 2 sets of chromosomes, 46 in total, that they inherited their parents. Chromosomes carry the genes, particularly the alleles that the offspring inherit. Gregor Mendel had no understanding of chromosomes when conducting his studies. He experimented and tested peas and discovered that some genes were dominated (showed up) while others were recessive (hidden). What he didn’t know was that chromosomes contained the genes that were responsible for…

Edwards syndrome also known as Trisomy 18 occurs in about 1 out of every 2500 pregnancies in the United States alone. This genetic diseases causes severe development delays due to an extra chromosome. Down syndrome is also caused because of an extra chromosome, however the difference between these two is that Edwards syndrome deals with more medical complications and has a higher risk factor on the early months and years of life. It usually occurs during the sperm and egg formation. The disease…

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…