Question

1. what is a key advantage of crispr technology compared to older transgenic methods?

a) crispr can only be used on animals, not plants.
b) it always requires the use of a gene gun.
c) it can make precise edits to an organisms existing genome, often without adding foreign dna.
d) crispr is a form of traditional hybridization.

1. a major ethical concern associated with gmos discussed in the lesson is:

a) the requirement for all farmers to use no - till farming methods.
b) the control large corporations have over patented seeds, limiting farmer autonomy.
c) the proven danger gmos pose to human health upon consumption.
d) the decrease in crop yields seen globally since their introduction.
reinforcing concepts: fill in the gaps:
word bank: agrobacterium | soil health | recombinant dna | transgenic | sustainable

1. a corn plant containing a gene from a soil bacterium is considered a ______ organism.
2. modern genetic engineering often relies on ______ technology to combine genetic material from different sources in a lab.
3. to be truly ______ agriculture must protect resources like water and soil for future use.
4. even with advanced gmos, long - term crop productivity depends on maintaining good ______, which provides essential nutrients and microbial life.
5. scientists often use a bacterium called ______ as a vehicle to transfer new genes into plant cells.

● remember: transgenic specifically means a gene was transferred from a different species. not all genetically modified organisms are transgenic—some, like those made with crispr, are just edited

Explanation:

• Question 3: CRISPR can precisely edit genomes without adding foreign DNA. Option a is wrong as CRISPR works on plants too. Option b is incorrect as gene gun is not always required. Option d is wrong as CRISPR is not traditional hybridization.
• Question 4: A major ethical concern with GMOs is corporate control over patented seeds (limiting farmer autonomy). Option a is not a major ethical concern. Option c - GMOs' danger to human health is not proven. Option d - Crop yields have not decreased globally due to GMOs.
• Fill - in - the - gaps:
• 1. A corn plant with a foreign (soil bacterium) gene is transgenic.
• 2. Recombinant DNA technology combines genetic material.
• 3. Sustainable agriculture protects resources.
• 4. Soil health provides nutrients and microbial life.
• 5. Agrobacterium is used to transfer genes.

Answer:

• Question 3: C. It can make precise edits to an organism's existing genome, often without adding foreign DNA.
• Question 4: B. The control large corporations have over patented seeds, limiting farmer autonomy.
• Fill - in - the - gaps:
• 1. transgenic
• 2. recombinant DNA
• 3. sustainable
• 4. soil health
• 5. Agrobacterium