5/2 Exam 3 in ART 1.102 Review 4/30 in class and 5/1 at 5pm in GRG 102 Bonus 3 is due now. 4/30 homework 4 (12 pts max)
Agricultural Hunter- Gatherer Industrial
from Teosinte Maize By artificial selection that began ~10,000 years ago.
Different foods from one species of plant. Created by artificial selection.
Wild member of Brassica oleracea: small side buds Artificial selection Number of Individuals Size of buds (cm) 1 2 3 1. Select individuals that have the largest side buds and breed them. 2. Of the offspring, select individuals that have the largest side buds and breed them. 3. Of the offspring, 4. After several generations, bud size increases dramatically. Figure: 1.3a Caption: (a) This plant is a wild member of the mustard family. It is the progenitor of broccoli, Brussels sprouts, and other domesticated plants. Brussels sprouts: extremely large side buds
Human resource production and use
Human resource production and use
Land use in USA, 1997
Agricultural Hunter- Gatherer Industrial
from DNA: the Information to proteins: the Actors nucleus DNA RNA cytoplasm to proteins: the Actors protein
Combinations of 3 nucleotides code for each 1 amino acid in a protein.
Genetic Engineering: Direct manipulation of DNA
Genetic Engineering: Direct manipulation of DNA Genetic Engineering of plants using Agrobacterium is very common.
Agrobacterium infect plants, inserting their DNA into the plants genome.
Transforming plants
Global Area planted with GM Crops size of Texas, 172 Millions of Acres
Common Genetically Modified Crops % of Total US Acres
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
Types of Genetically Modified Crops Herbicide Tolerance; Insect Resistance; Viral Resistance
Is Genetically Modifying Plants a Good Idea? size of Texas, 172 Millions of Acres
Is Changing an Organism’s DNA a Good or Bad Idea? Genes flow within species and between species. Are GM foods safe for the environment? Are herbicide or insect resistant plants safe to eat? Are GM foods profitable for: Consumers, Farmers, and Companies?
Pollution in Gulf of Mexico from run-off in the Mississippi river AAL 25.17
Pollen is easily transferred from plant to plant, and to related species.
GM crops found in Oaxaca and other MX states Genetic information moves. GM crops found in Oaxaca and other MX states GM crops illegal
GM crops found in Oaxaca and other MX states Genetic information moves, and is self-replicating. GM crops found in Oaxaca and other MX states GM crops illegal
Is Changing an Organism’s DNA a Good or Bad Idea? Genes flow within species and between species. Are GM foods safe for the environment? Are herbicide or insect resistant plants safe to eat? Are GM foods profitable for: Consumers, Farmers, and Companies?
N. Am. Forest An inter-connected ecosystem
Danger of GM crops to other organisms
Danger of GM crops to other organisms
Danger of GM crops to other organisms
Danger of GM crops to other organisms
Danger of GM crops to other organisms
Many Questions, but Few Answers? Genes flow within species and between species. Are GM foods safe for the environment? Are herbicide or insect resistant plants safe to eat? Are GM foods profitable for: Consumers, Farmers, and Companies?
Common Genetically Modified Crops % of Total US Acres
Many Questions, but Few Answers? Genes flow within species and between species. Are GM foods safe for the environment? Are herbicide or insect resistant plants safe to eat? Are GM foods profitable for: Consumers, Farmers, and Companies?
Where does the information about genetically modified foods come from?