Genetic Engineering Technology

5.4 Genetic Engineering Technology
SCIENCE • Form 4 • Chapter 5: Genetics

5.4 Genetic Engineering Technology

Genetic engineering technology is the genetic modification of an organism to introduce desirable characteristics. First introduced between 1971 and 1973, it encompasses recombinant DNA technology, genetically modified organisms (GMO), and gene therapy.

Learning Objectives

  • Define genetic engineering and describe its main branches such as recombinant DNA technology, GMO, and gene therapy.
  • Explain the steps involved in producing human insulin through recombinant DNA technology.
  • State the characteristics and benefits of Genetically Modified Organisms (GMO) in agriculture.
  • Evaluate the advantages and disadvantages of genetic engineering technology in human life.
  • Discuss the importance of ethics, values, and legal regulations in genetic engineering research.

Stages in Insulin Production via Recombinant DNA Technology

How bacterial plasmid DNA and human insulin genes are cut, joined, cloned, and harvested.

Stages in Insulin Production via Recombinant DNA Technology A flow chart showing five stages: a human pancreatic cell containing the insulin gene and a bacterial cell containing plasmid DNA are cut with restriction enzymes; the insulin gene is inserted into the plasmid to form recombinant DNA; the recombinant DNA is introduced into a bacterial cell; recombinant bacteria multiply in a fermentation tank; and human insulin is extracted and purified for medical use. 1. Human pancreatic cell 2. Bacterial cell with plasmid 3. Recombinant DNA formed 4. Fermentation tank 5. Extraction and purification contains the human insulin gene plasmid DNA is cut with restriction enzyme insulin gene inserted into plasmid recombinant bacteria multiply human insulin ready for medical use 1 2 3 4 5

Short Explanation

Definition

Genetic engineering is the term used for the genetic modification of an organism. It was first introduced around 1971–1973 and is known as genetic engineering science.

Genetic engineering allows scientists to transfer specific genes between different organisms. It is commonly related to recombinant DNA technology, genetically modified organisms (GMO), and gene therapy.

Recombinant DNA Technology

Recombinant DNA technology combines DNA from two different species to produce a new genetic characteristic. Examples include plant DNA combined with bacterial DNA, human DNA combined with fungal DNA to create hybrid DNA, and the human insulin gene combined with bacterial plasmid DNA to produce human insulin for diabetes mellitus patients.

Genetically Modified Organisms (GMO)

A GMO is an organism (plant, animal, bacteria, or virus) that has been genetically modified for a particular purpose. It combines genes from two different species and produces new traits that may not be achievable through traditional selective breeding or crossover processes.

Stages in the Production of Human Insulin

Recombinant DNA technology turns bacteria into biological factories.

Five stages in producing human insulin through recombinant DNA technology.
Stage Description
1 DNA from a human pancreatic cell containing the human insulin gene is cut using a restriction enzyme.
2 Plasmid DNA from a bacterial cell is also cut using a restriction enzyme.
3 The human insulin gene is inserted into the plasmid to form recombinant DNA, which is then introduced into a bacterial cell, forming recombinant bacteria.
4 Recombinant bacteria multiply in a fermentation tank and produce human insulin.
5 Human insulin is extracted and purified for medical use.

GMO in Agriculture

Desirable characteristics developed in genetically modified crops.

Applications of GMO in agriculture include paddy, maize, and palm oil cultivation. Desirable characteristics developed include:

Bigger Fruits

Genetically modified crops can produce larger fruits, increasing harvest yield.

Higher Nutritional Value

GMO crops can be enhanced to contain more nutrients for consumers.

Resistance to Pests and Diseases

Modified crops resist pests and diseases, reducing crop damage.

Environmental Benefit

Pest-resistant crops reduce the need for chemical pesticides, thereby decreasing environmental pollution.

Effects of Genetic Engineering Technology in Life

Advantages and disadvantages of genetic engineering.

Advantages

  • Identifies and determines hereditary diseases and consequently treats them.
  • Produces quality plants and livestock.
  • Produces plants and livestock with higher resistance to diseases compared to earlier generations.
  • Produces crops that require a shorter time to harvest.
  • Produces insulin and vital enzymes from bacteria to improve human health.

Disadvantages

  • Products of genetic changes can cause allergies and adverse side effects in allergic consumers.
  • Creation of new species may disrupt ecosystems and cause original species to become extinct.
  • Can cause side effects such as unexpected mutations in consumers.
  • Technology could be misused unethically to produce harmful biological weapons.
  • Can lead to the emergence of super-organisms or pests with high resistance to pesticides.

Ethics in Genetic Engineering Technology

Moral and legal standards protect human welfare.

Research must be conducted with high integrity so that it does not violate moral and religious principles. It must be directed toward beneficial solutions, such as treating diseases like diabetes mellitus via insulin synthesis and solving global issues like food shortages and crop damage.

Strict laws and regulations must be enforced to regulate research, educate scientists, and prevent unethical misuse. Experiments must respect religious and moral sensitivities.

Try to Answer First

Answer in your mind, then press “Check Answer”.

1

What is the specific enzyme used to cut both the human insulin gene and the bacterial plasmid DNA in recombinant DNA technology?

Answer: Restriction enzyme.
2

Give two commercial traits desired in agricultural crops produced through genetic modification.

Answer: Pest or disease resistance, bigger fruits, higher nutritional value, or shorter time to harvest.
3

Why must strict ethics and laws be enforced in genetic engineering research?

Answer: To ensure research does not violate moral and religious sensitivities, and to prevent the misuse of technology, such as the production of biological weapons.

Common Mistakes

  • !Confusing recombinant DNA with the original organism's plasmid. Recombinant DNA is the hybrid plasmid formed after inserting the foreign gene into the cut plasmid.
  • !Thinking GMOs are only plants. GMOs can also be animals, bacteria, or viruses.
  • !Assuming genetic engineering only brings benefits. It can also produce pesticide-resistant pests or cause severe allergic reactions in consumers.

Concept Misunderstandings

Misconception

Genetic engineering is identical to traditional selective breeding.

Correct Concept

Traditional breeding crosses organisms within closely related species, whereas genetic engineering can transfer genes across completely different kingdoms, such as animal genes into plants or human genes into bacteria.

Misconception

Recombinant bacteria produce bacterial versions of insulin.

Correct Concept

Because they carry the human insulin gene, recombinant bacteria produce human insulin identical to that naturally produced in the human pancreas.

Summary

  • Genetic engineering modifies the genetic material of an organism to introduce desirable characteristics.
  • Recombinant DNA technology combines DNA from two distinct species, such as inserting the human insulin gene into a bacterial plasmid using restriction enzymes.
  • Recombinant bacteria multiply in fermentation tanks to produce pure human insulin for diabetes mellitus treatment.
  • GMOs possess modified genomes yielding benefits such as pest resistance, bigger crops, and reduced pesticide usage.
  • While genetic engineering boosts food supply and medical treatments, strict ethical standards and regulations are essential to prevent allergic hazards, ecological extinction, and biological warfare.

Short Activity

A. Objective Quiz

1 Which of the following is an advantage of genetically modified crops in agriculture?

2 Where do recombinant bacteria multiply to produce large amounts of human insulin?

B. Fill in the Blanks

3 The specific enzyme used to cut human DNA and plasmid DNA during recombinant DNA technology is the enzyme.

 

4 An organism whose genetic material has been altered by combining genes from two different species is called a Genetically Organism.

 

C. Drag and Drop: Match the Term to Its Description

Drag each term to the correct description. On a phone, tap an answer first, then tap a matching box. Tap the Answer Choices area to return a selected item.

Term
Recombinant DNA
Plasmid DNA
Human insulin
Biological weapons
Description
1 Hybrid DNA produced by combining DNA fragments from two different species.
2 Circular DNA extracted from a bacterial cell to carry a foreign gene.
3 Protein hormone synthesized by modified bacteria to help diabetes mellitus patients.
4 An unethical and harmful misuse of genetic modification technology.

C. Match the Term to Its Description

Write the correct term next to each description.

Description Term
1. Hybrid DNA produced by combining DNA fragments from two different species.  
2. Circular DNA extracted from a bacterial cell to carry a foreign gene.  
3. Protein hormone synthesized by modified bacteria to help diabetes mellitus patients.  
4. An unethical and harmful misuse of genetic modification technology.  

Answer choices: Recombinant DNA • Plasmid DNA • Human insulin • Biological weapons

Keywords

Genetic engineering Recombinant DNA technology Restriction enzyme Plasmid DNA Genetically Modified Organism (GMO) Fermentation tank Ethics in genetic research

Genetic Engineering Technology

5.4 Genetic Engineering Technology
SCIENCE • Form 4 • Chapter 5: Genetics

5.4 Genetic Engineering Technology

Genetic engineering technology is the genetic modification of an organism to introduce desirable characteristics. First introduced between 1971 and 1973, it encompasses recombinant DNA technology, genetically modified organisms (GMO), and gene therapy.

Learning Objectives

  • Define genetic engineering and describe its main branches such as recombinant DNA technology, GMO, and gene therapy.
  • Explain the steps involved in producing human insulin through recombinant DNA technology.
  • State the characteristics and benefits of Genetically Modified Organisms (GMO) in agriculture.
  • Evaluate the advantages and disadvantages of genetic engineering technology in human life.
  • Discuss the importance of ethics, values, and legal regulations in genetic engineering research.

Stages in Insulin Production via Recombinant DNA Technology

How bacterial plasmid DNA and human insulin genes are cut, joined, cloned, and harvested.

Stages in Insulin Production via Recombinant DNA Technology A flow chart showing five stages: a human pancreatic cell containing the insulin gene and a bacterial cell containing plasmid DNA are cut with restriction enzymes; the insulin gene is inserted into the plasmid to form recombinant DNA; the recombinant DNA is introduced into a bacterial cell; recombinant bacteria multiply in a fermentation tank; and human insulin is extracted and purified for medical use. 1. Human pancreatic cell 2. Bacterial cell with plasmid 3. Recombinant DNA formed 4. Fermentation tank 5. Extraction and purification contains the human insulin gene plasmid DNA is cut with restriction enzyme insulin gene inserted into plasmid recombinant bacteria multiply human insulin ready for medical use 1 2 3 4 5

Short Explanation

Definition

Genetic engineering is the term used for the genetic modification of an organism. It was first introduced around 1971–1973 and is known as genetic engineering science.

Genetic engineering allows scientists to transfer specific genes between different organisms. It is commonly related to recombinant DNA technology, genetically modified organisms (GMO), and gene therapy.

Recombinant DNA Technology

Recombinant DNA technology combines DNA from two different species to produce a new genetic characteristic. Examples include plant DNA combined with bacterial DNA, human DNA combined with fungal DNA to create hybrid DNA, and the human insulin gene combined with bacterial plasmid DNA to produce human insulin for diabetes mellitus patients.

Genetically Modified Organisms (GMO)

A GMO is an organism (plant, animal, bacteria, or virus) that has been genetically modified for a particular purpose. It combines genes from two different species and produces new traits that may not be achievable through traditional selective breeding or crossover processes.

Stages in the Production of Human Insulin

Recombinant DNA technology turns bacteria into biological factories.

Five stages in producing human insulin through recombinant DNA technology.
Stage Description
1 DNA from a human pancreatic cell containing the human insulin gene is cut using a restriction enzyme.
2 Plasmid DNA from a bacterial cell is also cut using a restriction enzyme.
3 The human insulin gene is inserted into the plasmid to form recombinant DNA, which is then introduced into a bacterial cell, forming recombinant bacteria.
4 Recombinant bacteria multiply in a fermentation tank and produce human insulin.
5 Human insulin is extracted and purified for medical use.

GMO in Agriculture

Desirable characteristics developed in genetically modified crops.

Applications of GMO in agriculture include paddy, maize, and palm oil cultivation. Desirable characteristics developed include:

Bigger Fruits

Genetically modified crops can produce larger fruits, increasing harvest yield.

Higher Nutritional Value

GMO crops can be enhanced to contain more nutrients for consumers.

Resistance to Pests and Diseases

Modified crops resist pests and diseases, reducing crop damage.

Environmental Benefit

Pest-resistant crops reduce the need for chemical pesticides, thereby decreasing environmental pollution.

Effects of Genetic Engineering Technology in Life

Advantages and disadvantages of genetic engineering.

Advantages

  • Identifies and determines hereditary diseases and consequently treats them.
  • Produces quality plants and livestock.
  • Produces plants and livestock with higher resistance to diseases compared to earlier generations.
  • Produces crops that require a shorter time to harvest.
  • Produces insulin and vital enzymes from bacteria to improve human health.

Disadvantages

  • Products of genetic changes can cause allergies and adverse side effects in allergic consumers.
  • Creation of new species may disrupt ecosystems and cause original species to become extinct.
  • Can cause side effects such as unexpected mutations in consumers.
  • Technology could be misused unethically to produce harmful biological weapons.
  • Can lead to the emergence of super-organisms or pests with high resistance to pesticides.

Ethics in Genetic Engineering Technology

Moral and legal standards protect human welfare.

Research must be conducted with high integrity so that it does not violate moral and religious principles. It must be directed toward beneficial solutions, such as treating diseases like diabetes mellitus via insulin synthesis and solving global issues like food shortages and crop damage.

Strict laws and regulations must be enforced to regulate research, educate scientists, and prevent unethical misuse. Experiments must respect religious and moral sensitivities.

Try to Answer First

Answer in your mind, then press “Check Answer”.

1

What is the specific enzyme used to cut both the human insulin gene and the bacterial plasmid DNA in recombinant DNA technology?

Answer: Restriction enzyme.
2

Give two commercial traits desired in agricultural crops produced through genetic modification.

Answer: Pest or disease resistance, bigger fruits, higher nutritional value, or shorter time to harvest.
3

Why must strict ethics and laws be enforced in genetic engineering research?

Answer: To ensure research does not violate moral and religious sensitivities, and to prevent the misuse of technology, such as the production of biological weapons.

Common Mistakes

  • !Confusing recombinant DNA with the original organism's plasmid. Recombinant DNA is the hybrid plasmid formed after inserting the foreign gene into the cut plasmid.
  • !Thinking GMOs are only plants. GMOs can also be animals, bacteria, or viruses.
  • !Assuming genetic engineering only brings benefits. It can also produce pesticide-resistant pests or cause severe allergic reactions in consumers.

Concept Misunderstandings

Misconception

Genetic engineering is identical to traditional selective breeding.

Correct Concept

Traditional breeding crosses organisms within closely related species, whereas genetic engineering can transfer genes across completely different kingdoms, such as animal genes into plants or human genes into bacteria.

Misconception

Recombinant bacteria produce bacterial versions of insulin.

Correct Concept

Because they carry the human insulin gene, recombinant bacteria produce human insulin identical to that naturally produced in the human pancreas.

Summary

  • Genetic engineering modifies the genetic material of an organism to introduce desirable characteristics.
  • Recombinant DNA technology combines DNA from two distinct species, such as inserting the human insulin gene into a bacterial plasmid using restriction enzymes.
  • Recombinant bacteria multiply in fermentation tanks to produce pure human insulin for diabetes mellitus treatment.
  • GMOs possess modified genomes yielding benefits such as pest resistance, bigger crops, and reduced pesticide usage.
  • While genetic engineering boosts food supply and medical treatments, strict ethical standards and regulations are essential to prevent allergic hazards, ecological extinction, and biological warfare.

Short Activity

A. Objective Quiz

1 Which of the following is an advantage of genetically modified crops in agriculture?

2 Where do recombinant bacteria multiply to produce large amounts of human insulin?

B. Fill in the Blanks

3 The specific enzyme used to cut human DNA and plasmid DNA during recombinant DNA technology is the enzyme.

 

4 An organism whose genetic material has been altered by combining genes from two different species is called a Genetically Organism.

 

C. Drag and Drop: Match the Term to Its Description

Drag each term to the correct description. On a phone, tap an answer first, then tap a matching box. Tap the Answer Choices area to return a selected item.

Term
Recombinant DNA
Plasmid DNA
Human insulin
Biological weapons
Description
1 Hybrid DNA produced by combining DNA fragments from two different species.
2 Circular DNA extracted from a bacterial cell to carry a foreign gene.
3 Protein hormone synthesized by modified bacteria to help diabetes mellitus patients.
4 An unethical and harmful misuse of genetic modification technology.

C. Match the Term to Its Description

Write the correct term next to each description.

Description Term
1. Hybrid DNA produced by combining DNA fragments from two different species.  
2. Circular DNA extracted from a bacterial cell to carry a foreign gene.  
3. Protein hormone synthesized by modified bacteria to help diabetes mellitus patients.  
4. An unethical and harmful misuse of genetic modification technology.  

Answer choices: Recombinant DNA • Plasmid DNA • Human insulin • Biological weapons

Keywords

Genetic engineering Recombinant DNA technology Restriction enzyme Plasmid DNA Genetically Modified Organism (GMO) Fermentation tank Ethics in genetic research