Essays Tagged: "chromosomes"

DNA

smitting geneticinformation from parent to offspring. It was known early into the 20th century that chromosomes, the geneticmaterial of cells, contained DNA. In 1944, Oswald T. Avery, Colin M. MacLeod ... T. Avery, Colin M. MacLeod, and Maclyn McCartyconcluded that DNA was the basic genetic component of chromosomes. Later, RNA would be proven toregulate protein synthesis. (Miller, 139)DNA is the geneti ...

(5 pages) 194 0 4.0 Jan/1996

Subjects: Science Essays > Genetics & Genome Projects

HYPERCELL / CELL DIVISION

into the nuclear spaces of the two daughter cells.The cell cycle has four phases:1. S Phase; Where chromosomes duplicate.2. M phase: chromosome segregation sequence occurs.These two phases are separa ... hase checkpoint, in order for the cycle to continue, it is necessary to know whether or not all the chromosomes are in spindle, if that is the case, then the cycle continues.3. Which check point is mo ...

(5 pages) 76 0 4.0 Jan/1997

Subjects: Science Essays > Biology

HYPERCELL / CELL DIVISION

into the nuclear spaces of the two daughter cells.The cell cycle has four phases:1. S Phase; Where chromosomes duplicate.2. M phase: chromosome segregation sequence occurs.These two phases are separa ... hase checkpoint, in order for the cycle to continue, it is necessary to know whether or not all the chromosomes are in spindle, if that is the case, then the cycle continues.3. Which check point is mo ...

(5 pages) 88 0 4.6 Jan/1997

Subjects: Science Essays > Biology

Down Syndrome Report

21, or the presence of three copies of the 21st chromosome. As a result, the affected person has 47 chromosomes in all body cells instead of the normal 46, although how this causes the condition's sym ... e that the reason for the abnormal chromosomal assortment is the fertilization of an ovum having 24 chromosomes by a sperm with a normal assortment of 23, but they have also found that the sperm can c ...

(2 pages) 74 0 3.0 Feb/1997

Subjects: Humanities Essays > Health & Medicine > Diseases

Sickle Cell Anemia

, Maltese, Sicilian, Sardinian, Turkish, andSouthern Asian ancestry.How transmitted type of gene or chromosomes that causes the disease.Sickle Cell Anemia is a sex linked gene. One way somebody could ... , Maltese, Sicilian, Sardinian, Turkish, andSouthern Asian ancestry.How transmitted type of gene or chromosomes that causes the disease.Sickle Cell Anemia is a sex linked gene. One way somebody could ...

(2 pages) 77 0 3.0 Feb/1997

Subjects: Humanities Essays > Health & Medicine > Diseases

A Massive Project for the Benefit of Mankind. A Look at the Human Genome Project

g medical technology to new heights as they race to map all of the genes, nearly 100,000, in the 23 chromosomes of the human body. Along the way, they hope to understand the basis of, and maybe even d ... eet its objectives ahead of schedule. The project was estimated to have detailed maps of all of the chromosomes and know the location of most of the human Genes by 1996.Researchers have successfully l ...

(6 pages) 186 0 2.4 Jan/1996

Subjects: Science Essays > Technology

Down syndrome

me, this change occurs around the time of conception. A person with Down's syndrome has forty-seven chromosomes instead of the usual forty-six. A relatively common genetic disorder, Down's strikes 1 o ... , and many naturally conceived ones, never take root and grow because they have the wrong number of chromosomes. In IVF, doctors try to improve the odds by implanting three or more, assuming that some ...

(11 pages) 302 0 4.7 Mar/1997

Subjects: Social Science Essays > Education

Down Syndrome by Ali Oterrab, describes the definition of down syndrome, the causes and the symptoms.

a disorder caused by an extra chromosome on the chromosome 21 pair, giving the person a total of 47 chromosomes rather than the normal 46. This disorder results in mild to severe learning disabilities ... osome that is attached to another chromosome. If, in addition to the translocation, two normal 21st chromosomes are also present, the person will have some of the features of Down syndrome. If there i ...

(3 pages) 151 0 4.8 May/2002

Subjects: Science Essays > Mental Health

The process of mitosis (cell replication)

because very much is actually happening. All cell organelles are being produced in quantity and the chromosomes - DNA molecules are being copied exactly. The two identical copies of DNA are called a ' ... ---------------------------------------In this second stage changes to the cell become visible. The chromosomes condense, coiling up to about 5% of their original length, now clearly visible when a st ...

(2 pages) 81 0 3.0 Feb/1997

Subjects: Science Essays > Biology

DNA

of inheritance through genes were clarified, the largest questions remained unanswered: How are the chromosomes and their genes copied so exactly from cell to cell, and how do they direct the structur ... chemical nature of the gene and helped to establish the field of molecular genetics."The fact that chromosomes were almost entirely composed of two kinds of chemical substances, protein and nucleic a ...

(8 pages) 172 0 3.3 Mar/1997

Subjects: Science Essays > Genetics & Genome Projects

The Cross of straight Winged Fruit Flies With Nubbin winged flies

periments he concluded that the individual units of heredity, (genes) are arranged in a line on the chromosomes. This theory, known as the chromosome theory of heredity. Morgan also wrote The Theory o ... ooking at the phenotypes. We can use common knowledge to figure it out but we need to look at their chromosomes to find the real answer. The reason why we know this is because if one parent gives a do ...

(5 pages) 50 0 4.2 Nov/1996

Subjects: Science Essays > Biology

Down Syndrome

ome--An Informative Essay-Down Syndrome is the name for babies born with a disorderrelated to their chromosomes. It is caused when meiosis occursand an error occurs in the cells development. The reaso ... t is an extra chromosome is developed duringcell development. The abnormal development results in 47chromosomes rather than the usual 46 (23 from each parent).This extra gene causes problems in the ch ...

(2 pages) 84 0 3.0 Jan/1996

Subjects: Science Essays > Biology

Is Abortion Immoral?

in, 127) According to conservatives ("pro-life"), the zygote is human because it contains forty-six chromosomes and is the product of two human beings. They believe that since all humans have a right ... think of a single cell as a human being. They indicate that each cell within the boy has forty-six chromosomes (except the sex cells) and can be viewed as a "living thing" and a product of humans, bu ...

(5 pages) 232 3 4.0 Mar/2003

Subjects: Humanities Essays > Health & Medicine > Sex & Sexuality

Facts about Cystic Fibrosis.

r nourishment.CF is cause by mutation in a gene on chromosome 7. Chromosome 7 is one of 23 pairs of chromosomes that are each person's genetic makeup.SymptomsCystic Fibrosis affects each person differ ...

(2 pages) 54 0 3.4 May/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

DNA finger Printing Facts and progress of DNA finger printing. Facts of all DNA finger printing up to 2003.

e. The order of the nucleotides in the DNA is unique in every person.DNA makes up the thin strands (chromosomes) found in the center (nucleus) of all body cells. The only exceptions are red blood cell ...

(3 pages) 139 1 3.7 May/2003

Subjects: Science Essays > Biotechnology

You Are Not A Number.

h people?s lives such as, telephone number, height, number of bones in a person?s body, 23 pairs of chromosomes in each human body, even DNA genetic code can be converted into numbers. However, none o ...

(4 pages) 52 0 5.0 Jun/2003

Subjects: Humanities Essays > Philosophy

Relationships between certain Organelles.

ow the RNA polymerase enzyme to access the DNA strand. When the cell divides to form new cells, the chromosomes coil up more tightly than usual. The chromosomes are moved to opposite ends of the cell ...

(3 pages) 36 0 0.0 Jul/2003

Subjects: Science Essays > Biology

DNA lab write-up. Includes Introduction. Contains materials used in lab, and the steps taken.

I.IntroductionDNA is short for Deoxyribonucleic Acid. DNA is a molecule that forms your chromosomes and genes, and contains all of your genetic material. It is contained in the nucleus of ...

(3 pages) 66 1 3.7 Aug/2003

Subjects: Science Essays > Biology

Biology notes about DNA's roll in a cell and how it is fitted in. Also includes plenty imformation on Chromosomes.

that forms when a single DNA molecule and its associated proteins coil tightly before cell division.Chromosomes become visible through a microscope only after they have condensed prior to cell divisio ... omatids are attached by a protein disk at a point called a centromere.Human cells have 23 different chromosomes. Your body cells (also called somatic cells) contain two copies of each chromosome, for ...

(3 pages) 69 1 3.2 Aug/2003

Subjects: Science Essays > Biology

Biology notes on genetics.

embrane - bound organelles. A bacterium's single DNA molecule is not coiled around proteins to form chromosomes. Instead, its face of the plasma membrane like a rope attached to the inner wall of a te ... le cells of bacteria. Cell division in eukaryotic cells must take into account the nucleus with the chromosomes inside and the many other internal organelles, all of which must be strategically maneuv ...

(5 pages) 129 2 2.4 Aug/2003

Subjects: Science Essays > Biology