Essays Tagged: "Mutation"

The evolution theory

Lamarckism developed byJean Baptisete DeLamarck (1829) to Darwinism by Charles Darwin (1859) to The MutationTheory by Hugo deVries (1901) right up to the current theory of Neo-Darwinism, modifications ... h.'To postulate that the development and survival of the fittest is entirely a consequence ofchance mutations seems to me a hypothesis based on no evidence and irreconcilable with thefacts. These clas ...

(18 pages) 427 1 3.0 Apr/1996

Subjects: Humanities Essays > Philosophy > Classical Philosophy


h. In most cases (over 80 percent), however, Achondroplasia is not inherited but results from a new mutation (change) that occurred in the egg or sperm cell that formed the embryo.In 1994, researchers ...

(2 pages) 49 0 3.6 Apr/1997

Subjects: Humanities Essays > Health & Medicine > Diseases

Biology Test on Discrete Particle of Inheritance Model

gauche model of what could happen will be produced. The model congregated is not transcendent since mutation is not accounted for during simulation.The principle of segregation, by Mendel, justifies t ... med this with his experiments on the Drosophila fly. He subjected the flies to radiation and caused mutation of observable traits. With this information Morgan and his students proved genes are chromo ...

(7 pages) 81 0 4.7 Dec/1996

Subjects: Science Essays > Biology


cended from a single individual. The members of a clone have the same characteristics, except where mutation and environmentally caused developmental variation have occurred. Cloning can occur natural ...

(2 pages) 55 0 3.0 Feb/1997

Subjects: Science Essays > Genetics & Genome Projects


s when aenvironment makes a individual adapt to that certain environment by variationsthat arise by mutation and genetic recombination. Also it favors certain traits in aindividual than other traits s ... na gene pool to change and allow the organism to evolve. The most obviousmechanism would have to be mutation that arises in the gene pool of apopulation or individual. It is also the original source o ...

(3 pages) 116 0 4.0 Feb/1997

Subjects: Science Essays > Biology


tronic Encyclopedia, Cancer).The question is, what exactly is cancer? Cancer, is the break down and mutation of thecells of the body, when the DNA (Deoxyribonucleic Acid) sequences in those molecules ... es in those molecules aredisrupted and errors form in the structures, (Grolier, Genetic Code). This mutation spreadsthrough surrounding tissue until it disrupts major systems in the body (such as resp ...

(11 pages) 152 1 3.4 Mar/1994

Subjects: Humanities Essays > Health & Medicine > Diseases

What is cancer and why/how does it kill? How do chemotherapeutic agents work? Why does chemotherapy, itself, cause health problems?

group of diseases characterized by uncontrolled growth and the spread of abnormal cells caused by a mutation or defect in the genetic material of a cell. If one cell becomes cancerous then all cells t ...

(1 pages) 51 0 4.3 Jan/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

Huntington's Disease

nds itself to the Huntington molecule only in the brain. Both conclude that Huntington Disease is a mutation that causes damage to brain cells further in a person's life.HD is inherited as a single fa ...

(2 pages) 58 0 5.0 Mar/2003

Subjects: Humanities Essays > Health & Medicine

The Disease Ichthyosis: The causes, effects, and treatments.

births and is the mildest form of ichthyosis.Ichthyosis is a rare skin disorder caused by either a mutation of a gene or is passed though inheritance. It is not contagious and there is no way to prev ...

(2 pages) 71 0 2.2 Mar/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

Cloning: An Ethical Debate

mal cycle of life. There would be a large number of identical genes, which minimizes the chances of mutation and evolution, the reason how living things naturally adapt to the ever-changing environmen ... ion, I feel that human cloning is unethical because it can be very dangerous; health risks from the mutation of the genes may occur. Children may be born physically/mentally unstable. The clone would ...

(4 pages) 132 2 4.2 Mar/2003

Subjects: Science Essays > Biology > Human Biology

Facts about Cystic Fibrosis.

h CF cannot break down their food into the substances the body needs for nourishment.CF is cause by mutation in a gene on chromosome 7. Chromosome 7 is one of 23 pairs of chromosomes that are each per ...

(2 pages) 54 0 3.4 May/2003

Subjects: Humanities Essays > Health & Medicine > Diseases

This is an Essay about the history, hardships, and chemical properties of turner's syndrome

n 1938 by H. H. Turner. Turner Syndrome is when females have only one X chromosome. Because of this mutation a person with Turner Syndrome would have chromosomes that look like this:Obtained from Yaho ...

(2 pages) 44 1 2.5 Jan/2004

Subjects: Science Essays > Biology


om a single individual. The members of a clonehave precisely the same characteristics, except where mutation andenvironmentally caused developmental variation have occurred. The DNA isprecisley the sa ...

(4 pages) 43 0 3.7 Feb/2004

Subjects: Social Science Essays > Controversial Issues

Is Muller's Ratchet A Useful Tool In Explaining The Evolution Of Sexual Reproduction?

examination of Muller's ratchet, completed experiments, and its limitations must be accomplished. Mutation and drift create problems in an asexual society and the drift theory of sex declares that a ... t models (Freeman, 2001). It claims that "asexual populations are doomed to accumulate deleterious mutations" (Freeman, 2001). In 1964 Hermann Joseph Muller thought of a small asexual population whe ...

(4 pages) 38 0 5.0 Mar/2004

Subjects: Science Essays > Biology > Human Biology

Internet2-New Wave Of The Future

ernet was first developed, it was not intended for what it is used for today. It has spawned like a mutation of sorts. Nowadays, almost everything is on the web. People pay there bills online, do thei ... ping, communicate back and forth with each other, and even watch TV. Although very good for being a mutation, the current Internet is not designed for the next generation of applications. That is wher ...

(2 pages) 57 2 4.0 Apr/2004

Subjects: Science Essays > Computer Science

Genetic Disorders and they become what they are.

d to offspring diseases are also sometimes past to cause genetic disorders. Genetic Disorders are a mutation in a gene. Mutations are changes in the DNA sequence and can happen anytime, from being a s ... happen anytime, from being a single cell to being 100 years old. There are several type of genetic mutations that occur, chromosome abnormalities, single- gene disorder, multifactorial disorder, and ...

(6 pages) 91 0 5.0 Apr/2004

Subjects: Science Essays > Biology > Human Biology

Brain Conquered Brawn in Early Humans

Researchers say they may have discovered the mutation that caused the earliest humans to branch off from their apelike ancestors, a gene that led ... um to grow larger and led to the growth of a bigger brain capable of making tools and language. The mutation is reported in the latest issue of the journal Nature by a team of biologists and plastic s ... volution" and another calling it "super."The Pennsylvania researchers said their guess of when this mutation first occurred, about 2.4 million years ago, overlaps with the first fossils of prehistoric ...

(4 pages) 43 0 4.0 May/2004

Subjects: Social Science Essays > Anthropology


cal in their inherited characteristics that is, in their genes except for any differences caused by mutation. Identical twins, for example, who originate by the division of a single fertilized egg, ar ... l, man can only screw-up any attempt at creation. Just ask Dr. Frankenstein. Who knows what kind of mutations cloning would breed. Biologically would a clone evolve faster, slower? Would it affectivel ...

(12 pages) 120 1 3.8 May/2004

Subjects: Science Essays > Technology

The Theory of Evolution

lant and animal life evolvedover long periods of time from simple to more complicated forms through mutation and adaptation. Healso taught that only the fittest of each species would survive. He furth ... cept the alternative. Later, he attempted to find whether a single amino acid change in ahemoglobin mutation could be found that doesn't adversely affect the function of that hemoglobin. He wasunable ...

(10 pages) 157 3 4.7 Jun/2004

Subjects: Science Essays > Biology

A shotgun wedding of philosophy A brief examination of a God-of-the-gaps version of theology in contemporary philosophy.

Ever since the dawn of the mutation of mechanistic sciences of Newton and the revolutionary theories of Charles Darwin, the adv ...

(3 pages) 31 0 4.3 Jun/2004

Subjects: Humanities Essays > Philosophy > Classical Philosophy