• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The Avian Influenza

Extracts from this document...

Introduction

June 26, 2006 The Avian Influenza Avian influenza is an infection caused by bird flu viruses. These influenza viruses befall naturally amid birds. Undomesticated birds throughout the world bear the viruses in their intestines, but usually don't become ill from them (CDC). Nevertheless, avian influenza is extremely contagious amid birds and can cause some domesticated birds, including chickens, ducks, and turkeys, to become very ill and sometimes decease (CDC). One strain of avian influenza, the H5N1 virus, is communicable in much of Asia and has recently spread to Europe. Avian H5N1 infections have recently caused poultry and other birds to decease in a various number of countries ("Avian Influenza (Bird Flu)"). The first cases of human infection with avian influenza were identified in Hong Kong ("Avian Influenza"). ...read more.

Middle

The number of human fatalities has increased from 6 deaths in 1997, to 51 in 2006 (CDC). Nine years, from 1997 to 2006, is not much time compared to how aged the earth is, therefore supporting punctuated equilibrium since the numbers of human fatalities has increased in such a short amount of time. According to statistics recorded in Navapur, India, a major poultry farming region, 30,000 chickens have died in the past two weeks as a result of avian influenza, as opposed to no fatalities during the weeks before (Press, Associated). For the virus to evolve even more rapidly, all it needs is genetic variation, selection, mutations, and time. There have been more than millions of bird fatalities due to avian influenza worldwide, which also supports punctuated equilibrium. ...read more.

Conclusion

Wild birds are more likely to produce the required antibodies to fight off the infection, therefore making the domesticated birds weaker according to natural selection. This becomes an example of natural selection because of the wild bird's ability to produce required antibodies, making them stronger than the domesticated chickens. The avian influenza is a very shocking virus and the world is still yet to discover many key facts to make the virus easy to conquer. Avian influenza supports punctuated equilibrium, due to the increasing number of bird and human fatalities. Avian influenza can also become an example for natural selection due to the number of fatalities with domesticated birds and the amount of fatalities among wild birds. The avian influenza evolves rapidly and could easily evolve into a form that could be passed from human to human. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. IB Genetic Unit Notes

    Many believers consider that cloning is against the will of god Human inventiveness must not tamper with 'nature', regarding human life issues. All new developments take time for acceptance. Most improvements in medical technologies have received trenchant opposition which has receded with familiarity, and as the advantages are perceived.

  2. Should Animals have the same rights as Humans? Both animals and humans exhibit behaviours ...

    and the rest of the bees are females (workers). The queen bee produces a substance known as Queen Substance which has a range of functions; it tells the hive that the queen is present and healthy, it also causes the workers to remain sterile; and prevents the production of rival bees from eggs laid.

  1. DNA; Past, Present, and Future

    Their proposal was based on an X-ray diffraction image taken by Rosalind Franklin in May 1952, and on raw information about DNA bases being paired from Erwin Chargaff, whose rules played a significant role in the establishment of double-helix configuration.

  2. Adaptation and Natural selection

    In �lftanes, the shore is opened widely and leads directly to the Atlantic Ocean. Big rocks are all around the area. Seaweeds are usually big and have light green or yellow in colour, no sand around the area. Research Question: Is the colour of the snails in K�pavogur shore differs from �lftanes shore?

  1. Investigating the Probability Associated with Genealogy

    Consequently, due to the evident phenotypic variation between the two selected hypothetical parents, it is postulated that the offspring will possess intermediary genomes due to the simple mathematics of probability. For instance, if the Father possesses a large nose which is genotypically determined by NN, and the Mother possesses a small nose, which is determined by the gene nn.

  2. Monoclonal Antibodies

    One of these cells is an antibody producing cell (B-Lymphocyte) from a lab mouse and the other is a tumour of the bone marrow that can be adapted to grow permanently in cell culture, called a myeloma cell. The tumour cells can donate to a normal cell the ability to

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work