A. Content Standard
The learners demonstrate the understanding of the difference between
heredity and variation.
The learners should be able to report the importance of variation.
B. Performance Standard
C. Learning
Competencies
I. CONTENTS
II. LEARNING RESOURCES
A. References
Teacher’s Guide
Learner’s Material
Textbook Page
Additional Materials
from Learning Resource (LR)
Portal
B. Other Learning
Resources
IV. PROCEDURES
A. Elicit
Determine the possible genotype of the trait.
Heredity and Variation
Science Learner's Module: pages 200-204
https://www.google.com/search?q=heredity+and+variation+&client=ms-androidoppo-rev1&sxsrf=AJOqlzU6YBlO1KQf81rm3
Last meeting we discussed about mutation.
1. What is mutation?
2. What causes mutation?
3. What are the 4 types of mutation?
Instruct the learners to look for a partner and exchange their list of answers.
Compare their list to one another.
B. Engage
�Are all people look alike? Why or why not?
Group the students into four. Each group will determine the possible genotype of
the trait.
Trait (phenotype)
C. Explore
Attached Earlobes
Tongue Rolling
Dimples
Right-handed
Freckles
Straight hair
Cleft chin
Allergies
Dominant or
Recessive
Recessive
Dominant
Dominant
Dominant
Dominant
Recessive
Dominant
Recessive
Possible Genotype
ee
TT or Tt
DD or Dd
RR or Rr
FF or Ff
hh
CC or Cc
aa
Let one student in each group explain their answer.
D. Explain
1. How did you identify the possible genotype of the trait?
2. Is it possible that the dominant trait can be represented by a capital and a
small letter?
3. What do you call that trait if its genotype are both small letters?
Let the student understand heredity and variation. To understand better, ask the
student the following questions:
E. Elaborate
1. What is heredity?
2. What is genetic variation?
3. Differentiate heredity and variation.
4. Why do different people have different trait?
5. How allele affect variation?
Let the learners answer the following questions.
1. It is the transmission of genetic characters from parents to offspring.
2. Any of the alternative forms of gene in a genotype and represents by a
letter?
3. Refers to the difference between individual.
4. An observable characteristics of an organism.
5. It is weak, unexpressed trait of pair that has no effect in the phenotype.
Determine whether the trait is dominant or recessive.
F. Evaluate
6. Curly hair - CC
7. Dimples - Dd
8. Left handed - ff
9. Green eyes - Gg
10. Pointed nose - nn
Answer key:
1. Heredity 2. Alleles 3. Variation
4. Phenotype
5. Recessive traits
6. Dominant
7. Dominant
8. Recessive 9. Dominant
10. Recessive
G. Extend
V. REMARKS/REFLECTION
Research about Mendelian Genetics.