Should we Grow GM Crops?
Instructions: Read the page and click YES or NO, reach the next...click YES or NO...etc until you’ve read all the arguments -- You will need to do this 12 times in order for your votes to be tallied. Navigate the site, each of the bold headings below are links within the site
1. What is a GM Crop.
A GM crop is a fruit or vegetable that has been genetically modified.
2. List 2 arguments FOR the growing of GM crops
Crops can be engineered to grow in climates that they usually aren't suited for, so they could enhance the local economy. Also,
crops can be engineered to grow faster, so eventually there will be many more crops. Eventually, this could go as far as to combat world hunger.
3. List 2 arguments AGAINST the growing of GM crops.
Genetically modified crops can sometimes create new allergies and cause health risks.
*Read some of the reader’s responses.
Engineer a Crop
4. Practice this simulation until you get the largest ears of corn. How many times did it take you?
I bred the largest ears of corn in two tries.
What’s for Dinner?
*Click on the foods on the table to see what research is being done to bioenginner the foods.
5. List two foods and desribe how they are being modified.
Cotton is being genetically modified to be more resistant and tolerant to low moisture. Bananas are being modified to contain edible vaccines to a variety of diseases, such as hepatitis, polio, cholera, and malaria. Bananas are well-equipt for this job because their thick peel prevents contaminants from getting inside.
Viewpoints
*Read the article titled “Are GM Food Sufficiently Regulated in the US?”
Do you think food should be labeled if it has been genetically modified? Why or Why not?
I think that it would be considerate to mark genetically engineered items, so that anyone who is opposed to genetic engineering will be able to opt out of purchasing the items. This could last until genetic engineering became a more accepted practice.
Friday, December 17, 2010
Monday, December 6, 2010
IDENTICAL TWINS: PINPOINTING ENVIRONMENTAL IMPACT ON THE EPIGENOME
1. At birth, the identical twins' environment is the same, causing their expressed genes to be the same in turn. As they progress into adulthood, however, their experiences and environments will differ, causing changes in the twins' respective genomes. Eventually the expressed genes will cause the two twins to look different from one another.
2. Nutrition, exercise, and exposure to toxins all affect the epigenome of the twins.
3. An imprinted gene is defines as: "a gene whose expression has been affected by genomic imprinting so that only a single allele functions, the other being turned off by epigenetic mechanisms during embryonic development." This would apply to any gene affected by epigenomics.
YOUR ENVIRONMENT, YOUR EPIGENOME
1. No one in my family smokes, so I am exposed to relatively low levels of toxicity. I eat healthier and get more exercise than I used to, which may be why I've gotten thinner over the past few years.
LICK YOUR RATS
1. A high nurturing rat mother will excessively groom her cub. The more grooming a rat receives, the greater the amounts of GR proteins active in its brain. This will allow it to receive a calming chemical called cortisol easier than rats without GR.
2. Licking the baby rats activates its GR chemical.
3. GR proteins in the hippocampus attract the stress-relieving hormone cortisol. Because of this, rats that were licked as infants and had more GR proteins became calm quicker than those who were neglected.
4. In humans, children that are neglected are more likely to get into crime and drugs. Our parents are our premiere role models, so their actions and reactions to us profoundly impact how we turn out.
NUTRITION & THE EPIGENOME
1. The nutrients in the foods we eat create methyl groups (epigenetic tags that are responsible for gene expression). Some of these nutrients are folic acid, B vitamins, and SAM-e.
2. A mother's nutrition during pregnancy as well as the offspring's food as an infant can profoundly impact the child into adulthood. Genes such as obesity can be expressed if the mother does not have adequately healthy food.
EPIGENETICS & THE HUMAN BRAIN
1. In suicide cases, the levels of methyl are higher, resulting in less mRNA and ribosomes, and therefore less replication to take place.
2. Drugs can affect methylation by triggering epigenetic change in the brain. Some diseases can be reversed through these changes.
1. At birth, the identical twins' environment is the same, causing their expressed genes to be the same in turn. As they progress into adulthood, however, their experiences and environments will differ, causing changes in the twins' respective genomes. Eventually the expressed genes will cause the two twins to look different from one another.
2. Nutrition, exercise, and exposure to toxins all affect the epigenome of the twins.
3. An imprinted gene is defines as: "a gene whose expression has been affected by genomic imprinting so that only a single allele functions, the other being turned off by epigenetic mechanisms during embryonic development." This would apply to any gene affected by epigenomics.
YOUR ENVIRONMENT, YOUR EPIGENOME
1. No one in my family smokes, so I am exposed to relatively low levels of toxicity. I eat healthier and get more exercise than I used to, which may be why I've gotten thinner over the past few years.
LICK YOUR RATS
1. A high nurturing rat mother will excessively groom her cub. The more grooming a rat receives, the greater the amounts of GR proteins active in its brain. This will allow it to receive a calming chemical called cortisol easier than rats without GR.
2. Licking the baby rats activates its GR chemical.
3. GR proteins in the hippocampus attract the stress-relieving hormone cortisol. Because of this, rats that were licked as infants and had more GR proteins became calm quicker than those who were neglected.
4. In humans, children that are neglected are more likely to get into crime and drugs. Our parents are our premiere role models, so their actions and reactions to us profoundly impact how we turn out.
NUTRITION & THE EPIGENOME
1. The nutrients in the foods we eat create methyl groups (epigenetic tags that are responsible for gene expression). Some of these nutrients are folic acid, B vitamins, and SAM-e.
2. A mother's nutrition during pregnancy as well as the offspring's food as an infant can profoundly impact the child into adulthood. Genes such as obesity can be expressed if the mother does not have adequately healthy food.
EPIGENETICS & THE HUMAN BRAIN
1. In suicide cases, the levels of methyl are higher, resulting in less mRNA and ribosomes, and therefore less replication to take place.
2. Drugs can affect methylation by triggering epigenetic change in the brain. Some diseases can be reversed through these changes.
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