This document summarizes a lesson on DNA replication. It begins with introducing the topic and dividing students into groups to complete different activities related to DNA replication. It then reviews the key terms and defines the three main steps of DNA replication: unzipping, base pairing, and joining. The importance of DNA replication is explained as ensuring that all body cells carry the same genetic material and instructions are copied exactly for the next generation. Students are assessed through a quiz asking them to list the steps of DNA replication and complete DNA replication activities. They are assigned to study the next topics of DNA transcription and translation.

1. SCIENCEGRADE10 Heredity, Inheritance and Variation
MARICEL APAS-MIRANDA
Teacher
DNA Replication

2. REVIEW Group Activity
Group 1: Arrange the strips of
paper given to the group order.
Group 2: Match the types of
RNA to its functions.
Group 3: Arrange the
Nitrogenous bases and match
its pair.

3. REVIEW Group 1
DNA Replication
Transcription
mRNA
Protein Chain
Translation

4. REVIEW Group 2
Ribosomal
RNA
mRNA
tRNA
Found in the
ribosome in the
cytoplasm
Copies the
information from
the DNA.
Delivers amino
acid one by one to
protein chain.

5. REVIEW GROUP 3
Purines Pyramidines
Adenine Thymine
Guanine Cytosine

6. MOTIVATION
Match the words
posted to its
definition.

7. MOTIVATION Answers
Enzymes
DNA
Helicase
DNA
Primase
Accelerate chemical
reactions.
Breaks the hydrogen
bond between the
nucleotides.
Add new nucleotides
to the parental
template strands.

8. MOTIVATION Answers
DNA
Polymerase
DNA
Ligase
Continue to add
complementary base
pair and proof read to
avoid mistake.
Seals any break in
new DNA strands.

9. LearningCompetency
Explain how protein
is made using
information from
DNA;

10. ONJECTIVES
1. Identify the steps of DNA
replication.
2. Simulate DNA
replication.
3. Show importance of DNA
replication.

11. PRESENTATION
Students are group into 3,
and base on the materials
given, let them perform the
task given by following the
instruction given.

12. PRESENTATION Steps of DNA replication
1. Unzipping
2. Base Pairing
3. Joining

13. PRESENTATION Steps of DNA replication
1. Unzipping- is the separation of the
two DNA strands that make up the helix
that forms letterY.
2. Base Pairing- match the
complementary base pair to the expose
the DNA strand.
3. Joining- connect the
complementary base pair and seal it.

14. EVALUATION Group Activity
Each group is task to draw a
ray diagram showing image
formed in a concave mirror and
describe the image formed.
After 10 minutes the group will
post their work on the board
and describe the image formed.

15. GENERALIZATION Show a video

16. GENERALIZATION Answers
Enzymes
DNA
Helicase
DNA
Primase
Accelerate chemical
reactions.
Breaks the hydrogen
bond between the
nucleotides.
Add new nucleotides
to the parental
template strands.

17. GENERALIZATION Answers
DNA
Polymerase
DNA
Ligase
Continue to add
complementary base
pair and proof read to
avoid mistake.
Seals any break in
new DNA strands.

18. GENERALIZATION Importance of DNA replication
•It ensure that all body cell must carry
the same genetic material and that
instructions are copied exactly for the
next generation.
•Occurs the S phase or synthesis stage
of the interphase,

19. EVALUATION Quiz in a ½ sheet of paper.
1. Enumerate the steps of
DNA replication.
a.
b.
c.

20. EVALUATION 2. Make a complementary
strand of the unzip DNA strand
given then unzip the parental
strand and make another
complementary strand.
A G C T C G G T A C T T A A A
C T C G T

21. EVALUATION
3. In 3 sentences give the
importance to DNA
replication.

22. ASSIGNMENT
Study the DNA
transcription and
translation