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

HSC Biology. Contract a flowchart that outlines the general process for creating a transgenic species.

Extracts from this document...


Year 12 HSC Biology 2010 Blueprint of Life Part B - Transgenic Species i.) Contract a flowchart that outlines the general process for creating a transgenic species. ii.) 1.) Indentify the gene which is transferred from another species into the cotton plant. From where does it get its name? The gene is Bacillus thuringiensis(Bt), Japanese biologist, Shigetane Ishiwatari was investigating the cause of the sotto disease that was killing large populations of silkworms when he first isolated the bacterium Bacillus thuringiensis (Bt) as the cause of the disease in 1901. Ernst Berliner isolated a bacteria that had killed a Mediterranean flour moth in 1911, and rediscovered Bt. He named it Bacillus thuringiensis, after the German town Thuringia where the moth was found. 2.) State the reason why it is beneficial to transfer this gene to cotton plants. ...read more.


Most commercial B. thuringiensis products contain the protein toxin and spores, but some contain only the toxin component. When B. thuringiensis is ingested by a caterpillar, the protein toxin is activated by alkaline conditions and enzyme activity in the insect's gut. If the activated toxin attaches to specific receptor sites, it paralyzes and destroys the cells of the gut wall, allowing the gut contents to enter the insect's body cavity. Poisoned insects may die quickly from the activity of the toxin or may stop feeding and die within 2 or 3 days from the effects of septicemia (blood-poisoning). iii.) Debate on Transgenic species - Extended response. Transgenic species are used to speed up the introduction of existing characters into a strain/breed for improvement and modification and/or developing animals specially created for use in xenografting, i.e. ...read more.


3. Some people feel that animals should be regarded as equal to humans in that they have the same basic rights as human beings. However, in most societies animals are relegated to a position several steps below that of man. 4. An argument attempts to focus on integrity of species in that each biological species has a right to exist as a separate identifiable entity. But biologists do not regard a species as a fixed, water-tight entity; rather they are regarded as dynamic, constantly evolving groups. 5. Finally, the introduction of human genes into animals, and vice versa, may be seen by many as clouding the definition of "humanness". But most of the known human genes are not unique, and comparable genes do occur in animals. In addition, many retroviruses have integrated into the human genome without any recognizable devaluation of our humanness. Reference Book Rhonda Caddy and Jane West, 2003, Macquarie Revision Guides, Macmillan Education, Australia Websites Mettler Toledo, United States Patent 6063629, US, viewed 18 May 2010, http://www.freepatentsonline.com/6063629.html ...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. The Effects of Salinity on Wheat Germination

    All seeds some to have been affected equally in spite of this. There were few qualitative observations that were anomalous apart from perhaps the mould growing in the 5% solution as this would seem unlike the characteristic behaviour of mould and it is not apparent why the healthy seeds were

  2. Enzyme IA Biology

    This can be observed through comparing the averages of oxygen produced between catalase temperatures. The cold temperature of 0�C produced an average of 5.2ml of oxygen. The room Temperature of 22�C produced an average of 23.06ml of oxygen. The high temperature of 44�C produced an average of 11.4ml.

  1. Biology - Observing the Process of Guttation

    for each plant should be the same o Type of plant in each pot should be the same MATERIALS AND METHODS: Materials: (original): * 6 green bean sprout seeds of the same variety * 6 containers of the same type and size * Soil from backyard (50g for each container)

  2. Population Ecology - Dandelions

    Another aspect may have been walking in a straight line towards the fence. Some members deviated from the straight path that they were supposed to follow for best representation of data, which may have caused slight variant results.

  1. Biology- Extended essay. For this research, I investigated the effects of DDT and ...

    Continue the above procedure with different concentrations of DDT as 2ppm, 4ppm and 6ppm respectively. 19. The same experiment now has to be laid out to carry out the second and third investigation regarding the Azo Dye and the mixture between DDT and the Azo Dye.

  2. Biology Extended Essay 2009

    be enhanced to produce high quality juice.16 When juice is transferred to the TASTE machine, evaporation results in a loss of fresh juice flavors, color degradation due to thermal heat. The temperature used in the TASTE machine is much higher than the pasteurized orange juice.

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

    Fixed behaviours lead to predictable responses and are vital to the survival of an organism with limited experience so they are reinforced by natural selection. Niko Tinbergen examined which features of the beak induced chicks to peck by using models of herring gull heads in different shapes and colours.

  2. Biology independent investigation, Ecology

    1.1.2-Control Used for Comparison - Distilled water as it is pure and will not have any fluorine present 1.1.3- Apparatus and Materials (Table 2) Materials- Materials- Quality sodium fluoride NaF for stock solution 5g stock solution (5mg in 500mls) (100ppm) 500ml vermiculite 250g distilled water 1L Apparatus Quantity Pipette (5mls)

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