Grade Level Grade 8 Quarter Fourth Quarter

Semester First Semester Region NCR

Living Things and their
Learning Area Teaching Dates
Environment

I. OBJECTIVES
The learners demonstrate an understanding of:
A. Content Standards demonstrate an understanding of how cells divide to produce new cells

The learners should be able to:

B. Performance
Standards report on the importance of variation in plant and animal breeding

C. Learning The learners should be able to:

Competencies/ Describe the changes that occur in each stage of meiosis
Objectives
Write the LC code for S8LT-IVd16
each
II. CONTENT Stages of Meiosis
III. LEARNING RESOURCES
A. References
1. Teacher’s Guide pages
2. Learner’s Materials
pages
3. Textbook pages
4. Additional Materials
from Learning
Resource (LR) portal
https://threader.app/thread/1090595635571523584
B. Other Learning https://tanzaniainspirationalbog.wordpress.com/2017/06/19/%E2%80%8Bmeiosis-ii-
Resources and-the-outcomes-of-meiosis/

IV. PROCEDURES
(ELICIT)

Recall: STAGES OF MITOSIS

A Table will be posted in the board showing the order of the stages of Mitosis.
A. Reviewing previous The Learners have to stick the pictures of the stages in its corresponding column.
lesson or presenting
the new lesson

MITOSIS
Prophase Metaphase Anaphase Telophase
 Grade Level Grade 8 Quarter Fourth Quarter
Semester First Semester Region NCR
Living Things and their
Learning Area Teaching Dates
Environment

B. (ENGAGE)
C. Establishing a
purpose for the
lesson “DECODE”

Procedures:
1. A set of pictures will be given as a clue on what’s the topic for today.
2. Each picture has its corresponding letter.
3. The learners will guess the topic by decoding the pictures.
Grade Level Grade 8 Quarter Fourth Quarter
Semester First Semester Region NCR
Living Things and their
Learning Area Teaching Dates
Environment

A B C D E F G H I J

K L M N O P Q R S T

U V W X Y Z

Presentation of the objectives

a. Define what is Mitosis.
b. Describe the changes that occur during each stage of mitosis.
c. Recognize the importance of cell division and its application to real life.

Unlocking of terminologies.
Fill in the missing letters.

DI__OID
 It is a cell that contain two copies of each chromosome (chromosome
from both parent)

HA_L_ID
 It is the term used when a cell has half the usual number of
chromosomes.
 Grade Level Grade 8 Quarter Fourth Quarter
Semester First Semester Region NCR
Living Things and their
Learning Area Teaching Dates
Environment

D. Presenting (EXPLORE)
examples/instances
of the new lesson
A. Video watching.
E. Discussing new
concepts and Students will watch a video on meiosis. After watching they will answer the
practicing new skills following questions:
#1 1. What is meiosis?
F. Discussing new 2. What cells go through meiosis?
concepts and 3. How many cell divisions does meiosis have? What are those?
practicing new skills 4. Does meiosis produce haploid or diploid cells?
#2
5. How many daughter cells do you end up with at the end of meiosis 2?
G. Developing mastery
(leads to Formative 6. When does crossing over occur?
Assessment 3) 7. Compare Meiosis I and Meiosis II

(EXPLAIN)
Meiosis is a type of cell division which reduces the number of chromosomes in the
parent cell by half. It is a special type of cell division where the cells undergo two
rounds of cell division to produce four daughter cells.
Meiosis I
 Prophase I-The copied chromosomes condense into X-shaped structures that
can be easily seen under a microscope. Each chromosome is composed of
two sister chromatids containing identical genetic information. The pairs of
chromosomes may then exchange bits of DNA in a process called
recombination or crossing over. At the end of Prophase I the membrane
around the nucleus in the cell dissolves away, releasing the chromosomes.
Leptotene- The chromosomes are replicated
Zygotene- the synapsis between the homologous chromosomes begin
Pachytene- stage where the crossing over takes place
Diplotene- the homologous chromosome begin to separate
Diakinesis- the nucleus disintegrates and the chromosomes are condensed
 Metaphase I- The chromosome pairs line up next to each other along the
centre (equator) of the cell. The centrioles are now at opposites poles of the
cell with the spindle fibers extending from them. The spindle fibres attach to
one chromosome of each pair.
 Anaphase I- The pair of chromosomes are then pulled apart by the spindle
fibers , which pulls one chromosome to one pole of the cell and the other
chromosome to the opposite pole. In meiosis I the sister chromatids stay
together.
 Grade Level Grade 8 Quarter Fourth Quarter
Semester First Semester Region NCR
Living Things and their
Learning Area Teaching Dates
Environment

 Telophase I and cytokinesis- The chromosomes complete their move to the

opposite poles of the cell. At each pole of the cell a full set of chromosomes
gather together. A membrane forms around each set of chromosomes to
create two new nuclei. The single cell then pinches in the middle to form two
separate daughter cells each containing a full set of chromosomes within a
nucleus. This process is known as cytokinesis.
Meiosis II

 Prophase II- Now there are two daughter cells. In each of the two daughter
cells the chromosomes condense again into visible X-shaped structures that
can be easily seen under a microscope. The membrane around the nucleus in
each daughter cell dissolves away releasing the chromosomes.
H. Finding practical (ELABORATE)
applications of Differentiate the stages of mitosis and meiosis.
concepts and skills in
daily living

I. Making
generalizations and
abstractions about
the lesson

J. Evaluating learning (EVALUATE)

1. In meiosis, the number of daughter cells produced is _____.
A. 2
B. 4
C. 6
 Grade Level Grade 8 Quarter Fourth Quarter
Semester First Semester Region NCR
Living Things and their
Learning Area Teaching Dates
Environment

D. 8
2. How many phase of meiosis are there?
A. 1
B. 2
C. 3
3. What is the process in Prophase I wherein the pairs of chromosomes may
then exchange bits of DNA?
A. Crossing over
B. Decoding over
C. Exchanging over
D. Passing over

4. The homologous chromosomes are aligned at the center during _____.

A. Anaphase I
B. Anaphase II
C. Metaphase I
D. Metaphase II

5. What do you call on the chromosomes that are pulled during Anaphase II?
A. Brother chromatids
B. Homologous chromatids
C. Sister chromatids
D. Twin chromatids

K. Additional activities (EXTEND)

for application or In a 1 whole sheet of paper, draw the stages of meiosis.
remediation

V. REMARKS

VI. REFLECTION
A. No. of learners who earned 80% in the evaluation
B. No. of learners who require additional activities for remediation
C. Did the remedial lessons work? No. of learners who have
caught up with the lesson
D. No. of learners who continue to require remediation
E. Which of my teaching strategies worked well? Why did these
work?
F. What difficulties did I encounter which my principal or
supervisor can help me solve?
G. What innovation or localized materials did I use/discover which
I wish to share with other teachers?