Download presentation
Presentation is loading. Please wait.
Published byMarvin Dorsey Modified over 9 years ago
1
Bonus #2 due now (Bonus #3 is posted) Today: plant biotech and an intro to animals
2
Human resource production and use http://www.earth-policy.org/Indicators/Grain/2006.htm Worldwide Grain Production and Consumption
3
We can now directly insert new genes into or modify existing genes of plants CB 20.2
4
Why Change a Plant’s DNA? Can change plant so that it has new or different characteristics –Produce needed protein –Insect resistance (Bt toxin) –Herbicide resistance (Round-up) –Drought or other stress resistance –Chemical remediation
5
Millions of Hectares Texas = 70 ha Is genetically engineering plants a good idea? http://www.gmo-compass.org/eng/agri_biotechnology/gmo_planting/257.global_gm_planting_2006.html Worldwide area planted with genetically modified crops
6
Is changing a plant’s DNA a good or bad idea? Genes flow within species and between species. Are GM foods safe for the environment? Are GM foods profitable for: –Consumers, Farmers, and Companies?
7
Pollution in Gulf of Mexico from run-off in the Mississippi river http://blog.nola.com/times- picayune/2007/06/despite_promises_to_fix_i t_the.htmlhttp://blog.nola.com/times- picayune/2007/06/despite_promises_to_fix_i t_the.html(Staff graphic by Dan Swenson) ‘07
8
Pollen is easily transferred from plant to plant, and to related species.
9
GM crops illegal GM crops found in Oaxaca and other MX states Genetic information moves.
10
GM crops illegal GM crops found in Oaxaca and other MX states Genetic information moves, and is self-replicating.
11
Is changing a plant’s DNA a good or bad idea? Genes flow within species and between species. Are GM foods safe for the environment? Are GM foods profitable for: –Consumers, Farmers, and Companies?
12
Herbicide Tolerance; Insect Resistance; Viral Resistance Types of Genetically Modified Crops
13
Monsanto stock price: 3/24/08 at 12: 30 pm= $106
14
Grain farmer claims moral victory in seed battle Ten years after he took on the multinational Monsanto, Saskatchewan man gets $660 and the right to talk about it http://www.theglobeandmail.com/servlet/story/LAC.20080320.FARMER20/TPStory/National
15
The Schmeisers' saga began more than 10 years ago, when Monsanto sued them after plants grown from genetically modified canola seeds were found on the couple's farm near Bruno, Sask., about 90 kilometres east of Saskatoon. The company said the Schmeisers violated its patent on the seeds, which had been genetically modified to resist Monsanto-brand herbicide, and that the couple knowingly planted them without paying the technology fees. Monsanto's claim sought damages totalling $400,000. http://www.theglobeandmail.com/servlet/story/LAC.20080320.FARMER20/TPStory/National
16
But the Schmeisers denied using the Monsanto seeds, arguing that the seeds blew onto their property from a nearby road or neighbouring farms. In 2004, the Supreme Court ruled 5-4 in favour of Monsanto, stating that plant genes and modified cells can be patented. Although the Schmeisers lost the case, the court ruled they did not have to pay damages. http://www.theglobeandmail.com/servlet/story/LAC.20080320.FARMER20/TPStory/National
17
Grain farmer claims moral victory in seed battle Ten years after he took on the multinational Monsanto, Saskatchewan man gets $660 and the right to talk about it The following year, more of the genetically modified canola appeared on the Schmeisers' farm. They pulled it out themselves and sent Monsanto a bill for $660. http://www.theglobeandmail.com/servlet/story/LAC.20080320.FARMER20/TPStory/National
18
Many Questions, but Few Answers? Genes flow within species and between species. Are GM foods safe for the environment? Are GM foods profitable for: –Consumers, Farmers, and Companies?
19
CB 26.22 Life as we know it… the animals
20
One important consideration of structure and function…surface area Nalca leaves http://www.celebratebig.com/chile/index3.htm
21
CB 40.3 One important consideration of structure and function…surface area
22
CB 40.4 Why is surface area so critical? Animals (and plants) must exchange various components with the environment
23
Organisms are organized: atoms molecules organelles cells tissues organs systems organisms
24
Four major tissue types in animals: epithelial, connective, muscle, and nervous
25
CB 40.5 Epithelieal tissue: Covers and lines body and/or parts. Tightly packed cells.
26
CB 40.5 Connective tissue: Holds and supports. Few cells with an extensive extracellular matrix.
27
CB 40.5 Muscle tissue: Movement. Long muscle fibers cells. Nerve tissue: Signaling. Generally long cells, neurons.
28
CB 40.6 Different tissues that comprise the stomach, an organ.
29
CB 40.11 Homeostasis: Maintaining a steady-state internal condition
30
Bonus #2 due now (Bonus #3 is posted) Today: plant biotech and an intro to animals
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.