DIVISION OF CITY SCHOOLS - MANILA
RAJAH SOLIMAN SCIENCE AND TECHNOLOGY HIGH SCHOOL
Science Department
HEREDITY WORKSHEET 1
ACTIVITY 1: PHENOTYPES AND GENOTYPES IN INCOMPLETE DOMINANCE
Name: ___________________________
Grade and Sec: ___________________
Objectives:
Explain incomplete dominance pattern of inheritance
Materials:
Activity sheets
Manila paper
Marking pen
Procedure:
1.
Read the given problem:
In four o’clock plants, R is the allele for red color and
W is the allele for white color. Show the possible
outcome of the cross between two pink flowered
four o’clock plants by using the Punnett square.
3.
4.
2.
Now, another cross was made involving a
red flowered four o’clock plant and a pink
flowered four o’clock plant. Using the
Punnett square again, show the possible
outcome.
Show your Punnett square for problems 1 and 2 using a Manila paper.
Present and discuss your answers.
Guide Questions:
Q1. How many types of gametes will each parent produce in problem no. 1?_________
In problem no. 2? ___________
Q2. What is the phenotype of a heterozygous four o’clock flower?__________
Q3. What are the possible phenotypes of the offspring from the cross of the parental plants in problem
no.1?_________________ In problem no. 2?_____________
Q4. What are the possible genotypes of the offspring from the cross of the parental plants in problem
no.1?_________________ In problem no. 2?_____________
What is Incomplete Dominance?
Parent’s Signature: ___________________________
Date signed: _____________________
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