Earth and Life Science

Quarter 2 – Module 24:

Genetic Engineering
Earth and Life Science
Quarter 2 – Module 24:
Genetic Engineering
Introductory Message
For the facilitator:

Welcome to the (Earth and Life Science Grade 11) Alternative Delivery Mode
(ADM) Module on (Genetic Engineering) !

This module was collaboratively designed, developed and reviewed by educators both
from public and private institutions to assist you, the teacher or facilitator in helping
the learners meet the standards set by the K to 12 Curriculum while overcoming
their personal, social, and economic constraints in schooling.

This learning resource hopes to engage the learners into guided and independent
learning activities at their own pace and time. Furthermore, this also aims to help
learners acquire the needed 21st century skills while taking into consideration their
needs and circumstances.

In addition to the material in the main text, you will also see this box in the body of
the module:

Notes to the Teacher

This contains helpful tips or strategies that
will help you in guiding the learners.

As a facilitator you are expected to orient the learners on how to use this module.
You also need to keep track of the learners' progress while allowing them to manage
their own learning. Furthermore, you are expected to encourage and assist the
learners as they do the tasks included in the module.

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For the learner:

Welcome to the Mathematics 7 Alternative Delivery Mode (ADM) Module on (Lesson

1: Genetic Engineering)!

The hand is one of the most symbolized part of the human body. It is often used to
depict skill, action and purpose. Through our hands we may learn, create and
accomplish. Hence, the hand in this learning resource signifies that you as a learner
is capable and empowered to successfully achieve the relevant competencies and
skills at your own pace and time. Your academic success lies in your own hands!

This module was designed to provide you with fun and meaningful opportunities for
guided and independent learning at your own pace and time. You will be enabled to
process the contents of the learning resource while being an active learner.

This module has the following parts and corresponding icons:

What I Need to Know This will give you an idea of the skills or
competencies you are expected to learn in the
module.

What I Know This part includes an activity that aims to

check what you already know about the
lesson to take. If you get all the answers
correct (100%), you may decide to skip this
module.

What’s In This is a brief drill or review to help you link

the current lesson with the previous one.

What’s New In this portion, the new lesson will be

introduced to you in various ways such as a
story, a song, a poem, a problem opener, an
activity or a situation.

What is It This section provides a brief discussion of the

lesson. This aims to help you discover and
understand new concepts and skills.

What’s More This comprises activities for independent

practice to solidify your understanding and
skills of the topic. You may check the
answers to the exercises using the Answer
Key at the end of the module.

What I Have Learned This includes questions or blank

sentence/paragraph to be filled in to process
what you learned from the lesson.

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 What I Can Do This section provides an activity which will
help you transfer your new knowledge or skill
into real life situations or concerns.

Assessment This is a task which aims to evaluate your

level of mastery in achieving the learning
competency.

Additional Activities In this portion, another activity will be given

to you to enrich your knowledge or skill of the
lesson learned. This also tends retention of
learned concepts.

Answer Key This contains answers to all activities in the

module.

At the end of this module you will also find:

References This is a list of all sources used in developing

this module.

The following are some reminders in using this module:

1. Use the module with care. Do not put unnecessary mark/s on any part of the
module. Use a separate sheet of paper in answering the exercises.
2. Don’t forget to answer What I Know before moving on to the other activities
included in the module.
3. Read the instruction carefully before doing each task.
4. Observe honesty and integrity in doing the tasks and checking your answers.
5. Finish the task at hand before proceeding to the next.
6. Return this module to your teacher/facilitator once you are through with it.
If you encounter any difficulty in answering the tasks in this module, do not
hesitate to consult your teacher or facilitator. Always bear in mind that you are
not alone.

We hope that through this material, you will experience meaningful learning and
gain deep understanding of the relevant competencies. You can do it!

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 What I Need to Know

This module was designed and written with you in mind. It is here to help you master
the nature of Earth and Life Science. The scope of this module permits it to be used
in many different learning situations. The language used recognizes the diverse
vocabulary level of students. The lessons are arranged to follow the standard
sequence of the course. But the order in which you read them can be changed to
correspond with the textbook you are now using.

The module has one lesson:

 Lesson 1 – Genetic Engineering

After going through this module, you are expected to:

1. define genetic engineering;
2. describe the techniques in genetic engineering as based on the situation
given;
3. appreciate the role of genetic engineering to human life.

What I Know

Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.
1. Organisms that have transferred DNA from other organisms are called
A. genetically modified organisms C. both a and b
B. transgenic organisms D. none of a and b
2. It is a process in which animals with desired characteristics are mated to
produce offspring with those desired traits is called
A. cloning C. inbreeding
B. hybridization D. selective breeding
3. It is a process of creating an organism that has an exact genetic copy of
another.
A. artificial selection C. gene splicing
B. cloning D. selective breeding
4. A technique in artificial selection that involves propagation of organisms with
desired traits
A. cloning C. inbreeding
B. hybridization D. selective breeding
5. It is a process where a DNA is cut out from one organism and put into
another organism.
A. cloning C. gene splicing
B. gel electrophoresis D. selective breeding
6. A recent technology used in genetic engineering is called
A. DNA Recombinant technology C. both a and b
B. Recombinant DNA technology D. none of a and b
7. A tool in genetic engineering where it cut and bind DNA nucleotides from two
sources.
A. bacteriophage C. plasmid
B. enzymes D. vector
8. It is a tool that helps in carrying and integrating the desired gene.
A. bacteriophage C. plasmid
B. enzymes D. vector
9. It is produced when two different nucleotides had been fused as one.
A. DNA C. restricted DNA
B. recombinant DNA D. vector DNA
10. All are tools in recombinant DNA technology except
A. enzymes C. restriction enzymes
B. host organisms D. vectors
11. All are ancient practices of genetic engineering except
A. hybridization C. recombinant technology
B. inbreeding D. selective breeding
12. Two individuals with unlike characteristics are crossed to produce the best in
both organisms.
A. cloning C. inbreeding
B. Hybridization D. selective breeding
12. It is a process where a DNA is cut out from one organism and put into
another organism.
A. cloning C. gene splicing
B. gel electrophoresis D. selective breeding
13. Most used host organism in recombinant DNA technology
A. bacteria C. plasmids
B. cells D. vectors
For numbers 14-15, refer to the following choices below.
A. Statement I is correct
B. Statement II is correct.
C. Statement I and II are both correct.
D. Statement I and II are both incorrect.
_________14. I - Since ancient time the practice of genetic engineering had begun.
II - Artificial selection is done to indirectly manipulate genes focusing
on the physical traits among organisms.
_________15. I – Vectors help in Recombinant DNA technology by carrying and
integrating the desired gene usually plasmids and
bacteriophages.
II - Host organism is used to propagate the recombinant DNA.
 Lesson

1 Genetic Engineering

Genetic engineering is the direct manipulation of an organisms’ genes using

biotechnology. It covers different kinds of technologies used to alter the genomes that
includes the insertion of genes from other individual either the same or from different
species that aims to produce or improve products.

What’s In

Activity 1 DNA, Genes, Proteins, Individual Trait

Using the diagram below and the grid to answer the question below.

DNA

GENES

PROTEINS

TRAIT

BENT FINGER

1. What are the roles of the DNA, genes and proteins in each trait?
2. How would you relate the individual trait or characteristics to proteins,
genes and DNA?

3. Would the manifestation of a trait be affected once the DNA nor the genes
are altered?
 Notes to the Teacher
This module will help you to understand the concepts about the process of
genetic engineering. All parts are consist of activities. Be guided with the
instruction on how you will answer each. Expectedly you will meet the
target at the end of the module.

What’s New

“Genetics become my all consuming passion. I wanted to create the perfect species.
One that does not just live on our planet but one that makes it better for future
generations.” – Yasmina Haque_

Activity 2. Students are asked to answer the questions.

1. What do you think are the objectives of scientists in genetic engineering?
2. How are scientists able to realize their objectives in genetic engineering?
3. Can you cite the techniques in genetic engineering scientists utilize in creating
outcomes?

What is It

Since ancient times the practice of genetic engineering had begun. Artificial selection
is done to indirectly manipulate genes focusing on the physical traits among
organisms. Breeders choose which organism to mate and produce offspring with
desirable traits. They maintain this procedure without control of what genes can be
passed. Selective breeding is a process when animals with desired characteristics are
mated to produce offspring with those desired traits such as Angus cows are bred to
increase more meat. Hybridizations are when two individuals with unlike
characteristics are crossed to produce the best in both organisms like the disease
resistant potato called the Burbank potato. Inbreeding is a technique of breeding
organisms that are genetically similar to maintain desired traits found in the pure
dog breeds. As defined genetic engineering is the process of changing the DNA in
living organisms to create something new. It involves artificial manipulation,
modification, and recombination of DNA or other nucleic acid molecules to modify an
organism or population of organisms.
Recombinant DNA Technology
Recombinant DNA is made by mixing DNA from two different sources. Restriction
enzymes was discovered in 1968 by Swiss microbiologist Werner Arbe. This was used
to splice, connect (or ligate), and remove or add nucleotides to sequences of the DNA.
This is process is used in recombinant DNA technology to remove and insert genetic
sequences from and into other sequences of another organism. Inserting the desired
gene into the genome of the host involves the selection of the desired gene for
administration into the host followed by a selection of the perfect vector (either
plasmid or bacteriophage) with which the gene has to be integrated, thus
recombinant DNA is formed. The recombinant DNA has to be introduced into the
host, maintained and carried forward to the offspring. Biotechnology and
pharmaceutical companies practice this technique in working with medical and
research purposes.

What’s More

Activity 3 Match me!

Using the terms in the box, match the genetic techniques in their descriptions.
Write your answer in the space given.

GEL ELECTROPHORESIS; GENE SPLICING

CLONING; INBREEDING
HYBRIDIZATION; SELECTIVE BREEDING
ARTIFICIAL SELECTION; GENETIC ENGINEERING

________________1. A science of changing the DNA in living organisms to create

something new
________________2. Breeders choose which organism to mate to produce offspring
with desired traits.
________________3. Animals with desired characteristics are mated to produce
offspring with those desired traits.
________________4. Two individuals with unlike characteristics are crossed to
produce the best in both organisms.
________________5. Breeding of organism that genetically similar to maintain
desired traits.
________________6. Creating an organism that is an exact genetic copy of another
________________7. DNA is cut out of one organism and put into another organism
________________8. A technique used to compare DNA from two or more
organisms.

What I Have Learned

1. Genetic engineering is the processes of changing the DNA in living organisms

to create something new.
2. Artificial selection is practiced to indirectly manipulate genes focusing on the
physical traits among organisms. This include selective breeding,
hybridization and inbreeding.
3. Genetic engineering is referred to various techniques used for the
modification or manipulation of organisms through the processes
of heredity and reproduction.
4. This includes cloning, gene splicing, gel electrophoresis and DNA
recombinant technology.
5. Recombinant DNA technology use to remove and insert genetic sequences
from and into other sequences of other organism.
6. The tools used in Recombinant DNA technology are restriction enzymes,
vectors and host organisms.

What I Can Do

Activity 4 Genetic Engineering Techniques

Directions. Distinguish the techniques in genetic engineering as based on the
situation and examples given. Write the letter of the choices.

A. Artificial selection B. Selective breeding C. Hybridization D. Inbreeding

E. Cloning F. Gene splicing G. Gel electrophoresis: analyzing DNA

____1. When animals with desired characteristics are mated to produce offspring
with those desired traits. Dachshund were once bred to hunt badgers and
other burrowing animals.
____ 2. Creating an organism that is an exact genetic copy of another. They will
 have the same exact DNA as the parent.
____3. DNA is cut out of one organism and put into another organism. A trait will
be transferred from one organism to another.
____4. Luther Burbank created a disease resistant potato called the Burbank
potato. He crossed a disease resistant plant with one that had a large food
producing capacity.
____5. A technique used to compare DNA from two or more organisms.
____6. Breeding of organism that genetically similar to maintain desired traits. It
keeps each breed unique from others.

Activity 5 Genetic Engineering Techniques

Directions. Express your idea, whether you agree or disagree in the following
statements about the current technology in genetic engineering. Write your answers
in your journal notebook. Choose two from the three techniques.

1. Monkeys have been Cloned, Paving the way for Human Cloning
__________________________________________________________________________________
__________________________________________________________________________________

2. Bacteria as Living Microrobots to Fight Cancer

__________________________________________________________________________________
__________________________________________________________________________________
3. Two genetic regions (variants in both ABO blood group locus and cluster of genes
in chromosome 3) Linked with Severe COVID-19
__________________________________________________________________________________
__________________________________________________________________________________

Assessment

Multiple Choice. Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.

1. It is the process of manipulating genes in order to have the desired trait.

A. artificial selection C. gene splicing
B. cloning D. selective breeding
2. It is the process of breeding an organism that are genetically similar to
maintain desired traits. It keeps each breed unique from others.
A. artificial selection C. inbreeding
B. cloning D. selective breeding
3. It is a technique where the DNA is cut out of one organism and put into another
organism. A trait will be transferred from one organism to another.
A. artificial selection C. genesplicing
B. cloning D. gel electrophoresis
4. It is a technique of creating an organism that is an exact genetic copy of the
other organism.
A. artificial selection C. gene splicing
B. cloning D. gel electrophoresis
5. An applied science of manipulating the genetic material of an organism through
artificial selection and biomedical techniques
A. artificial selection C. genetic engineering
B. cloning D. selective breeding
6. It is referred to the joining of almost any nucleotide sequences to create a new
gene product or to introduce a new gene sequence.
A. DNA Recombinant technology C. both a and b
B. Recombinant DNA technology D. none of a and b
7. It is produced chiefly by certain bacteria and has the property of cleaving DNA
molecules at or near a specific sequence of bases.
A. bacteriophage enzymes C. restriction enzymes
B. plasmid enzymes D. vector enzymes
8. Most common vector used in genetic engineering techniques
A. bacteriophage and plasmid C. plasmid and DNA
B. enzymes and plasmid D. restriction enzymes and DNA
9. Which is not performed to produce recombinant DNA?
A. Insertion of the genetic sequences into other sequences of another
organism.
B. Removal of the genetic sequences of an organism.
C. Selection of the perfect vector with which the gene must be integrated
D. Selection of the perfect enzymes with which the gene must be
integrated.
10. Which is not a tool in recombinant DNA technology?
A. enzymes C. restriction enzymes
B. host organisms D. vectors
11. Which is not an ancient practice of genetic engineering?
A. hybridization C. recombinant technology
B. inbreeding D. selective breeding
12. Two individuals with unlike characteristics are crossed to produce the best in
both organisms.
A. artificial selection C. genetic engineering
B. cloning D. hybridization
13. In recombinant DNA technology which is most used as a host organism?
A. bacteria C. plasmid
B. cells D. vectors
For numbers 14-15, refer to the following choices below.

A. Statement I is correct
B. Statement II is correct.
C. Statement I and II are both correct.
D. Statement I and II are both incorrect.

_________14. I - Since ancient time the practice of genetic engineering had begun.
II - Artificial selection is done to directly manipulate genes focusing
on the physical traits among organisms.
_________15. I – Enzymes help in Recombinant DNA technology by carrying and
integrating the desired gene usually plasmids and bacteriophages.
II - Host organism are used to propagate the recombinant DNA.

Additional Activities

Activity 6 PROS and CONS

A. Directions. Conduct a short interview with one or two of your family members.
Ask them about how they think the positive and negative effects of genetic
engineering. List all their responses.

QUESTIONS RESPONSES

B. Make a list of pros and cons of genetic engineering summarizing the interview done.
Fill up the table below.

PROS CONS

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