Genetically Modified Crops

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Questions and Answers

What is the purpose of using Gama or x-ray in induced mutation?

To repair damaged DNA chains
To decrease the number of mutations in DNA chains
To produce a new species or hybrid (correct)
To observe the effects of radiation on living organisms

What is the role of growth promotors in tissue culture technique?

To provide nutrients to the plant tissue
To inhibit plant growth
To assist in chromosomal rearrangements (correct)
To induce mutations in DNA chains

What is the result of chromosomal rearrangements in tissue culture technique?

Cell death
Gene mutation
Morphological alterations (correct)
Plant growth inhibition

What is the source of the special gene in gene manipulation technique?

Bacteria or viruses (B) Signup and view all the answers

What is the purpose of gene manipulation technique?

To introduce a special desire trait into an organism (B) Signup and view all the answers

What is the primary function of the Promoter in the transgenic process?

To initiate or start the replication process (D) Signup and view all the answers

What is the Promoter composed of?

A piece of RNA with few nucleotides (C) Signup and view all the answers

What is the result of the Promoter's function?

The initiation of gene expression (C) Signup and view all the answers

What is the significance of the number of nucleotides in the Promoter?

It is a few in number (D) Signup and view all the answers

What is the process that the Promoter is involved in?

Replication (B) Signup and view all the answers

What type of bacteria are modified genes from?

Bacillus thurginsis bacteria (A) Signup and view all the answers

What do insect-resistant plants produce?

Special toxins (B) Signup and view all the answers

What is the impact of insect-resistant plants on non-target species?

They can harm other non-target species (C) Signup and view all the answers

Where are non-target species typically found?

Along the food chain (A) Signup and view all the answers

What is the purpose of modifying genes from Bacillus thurginsis bacteria?

To produce insect-resistant plants (C) Signup and view all the answers

What is the main concern related to genetically modified crops?

Unintended harm to non-target species (C) Signup and view all the answers

What is a potential effect of genetically modified crops on the environment?

Gene flow to non-target species (D) Signup and view all the answers

Which of the following is a disadvantage of genetically modified crops?

Uncontrolled spreading of genetically modified traits (A) Signup and view all the answers

What is a potential impact of genetically modified crops on ecosystems?

Disruption of food chains (D) Signup and view all the answers

What is a concern related to the use of genetically modified crops?

Unintended consequences on ecosystem balance (B) Signup and view all the answers

What is the trend of global land areas of crops with genetically modified agronomic traits?

Growing (C) Signup and view all the answers

What is the purpose of genetically modifying crops for agronomic traits?

To increase crop yields (A) Signup and view all the answers

Where are genetically modified crops with agronomic traits found?

In different countries around the world (C) Signup and view all the answers

What is being modified in genetically modified crops with agronomic traits?

Agronomic traits (B) Signup and view all the answers

What is the result of genetically modifying crops for agronomic traits?

Increased crop yields (B) Signup and view all the answers

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Study Notes

Genetically Modified Crops

Global land areas of genetically modified crops with agronomic traits are increasing and distributed across different countries worldwide.

Induced Mutation

Induced mutation involves the use of gamma or x-ray to increase the number of mutations in DNA chains, producing a new species or hybrid.
However, this method is characterized by uncontrolled mutations.

Tissue Culture Technique

This method involves the use of recurrent plant tissue, growth promoters, and specific temperatures to induce chromosomal rearrangements and morphological alterations.

Gene Manipulation Technique

Gene manipulation involves the transfer of special genes with desired traits from plasmids of bacteria or viruses.
The process comprises three main components:
- The Promoter: a piece of RNA with few nucleotides necessary for initiating the replication of transgenic process.
Disadvantages and Environmental Effects of Genetically Modified Crops:
- Harm to non-target species: genetically modified plants containing modified genes of Bacillus thurginsis bacteria produce special toxins that can harm other non-target species in the food chain.