Punnett Squares: Practical Skills (Theory)
Science
GCSE Foundation
9 questions
~18 mins
1 views0 downloads
About This Worksheet
A Biology worksheet focusing on the practical understanding of Punnett Squares, including concepts, calculations, and real-world applications for GCSE Foundation students.
Worksheet Preview
Full preview • 9 questions
Punnett Squares: Practical Skills (Theory)
Subject: ScienceGrade: GCSE Foundation
Name:
Date:
TeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizz
Untitled Worksheet
Grade GCSE Foundation
A
Introduction to Punnett Squares
Read the introduction and answer the following questions to demonstrate your understanding of Punnett Squares and their role in predicting genetic inheritance.
1.
Define a Punnett Square and explain its purpose in genetics.
[2 marks]2.
Describe how a Punnett Square is constructed when crossing a homozygous dominant plant with a homozygous recessive plant.
[3 marks]B
Punnett Square Calculations
Use the following data to perform Punnett Square calculations. Show all your working and state your final predictions clearly.
1.
A heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt). What is the probability that their offspring will be tall? Express your answer as a percentage.
[4 marks]2.
Calculate the expected ratio of genotypes (homozygous dominant, heterozygous, homozygous recessive) when two heterozygous (Tt) plants are crossed.
[4 marks]C
Practical Skills and Theoretical Applications
Consider the following hypothetical experiment involving pea plants. Answer the questions based on the experimental setup and safety considerations.
1.
Design a simple experiment using Punnett Squares to test whether a dominant trait is inherited in pea plants. Mention the key steps, variables, and safety precautions.
[6 marks]D
Data Analysis and Interpretation
Read the following scenario and interpret the data provided.
1.
In a cross between a heterozygous brown-eyed (Bb) and a blue-eyed (bb) individual, 100 offspring are observed. 45 of these offspring have brown eyes, and 55 have blue eyes. Does this data support the predicted 1:1 genotypic ratio? Explain your reasoning.
[4 marks]E
Application to Real-World Situations
Answer the following question to demonstrate your understanding of how Punnett Squares are used beyond the classroom.
1.
Explain how Punnett Squares can be applied in agriculture to improve crop traits, giving a specific example.
[3 marks]F
Multiple Choice Quiz
Choose the best answer for each question.
1.
Which of the following best describes the purpose of a Punnett Square?
ATo calculate the probability of offspring inheriting certain alleles
BTo sequence DNA in genetic analysis
CTo measure the height of plants in a cross
DTo determine the age of fossils
G
Fill in the Blank
Complete the sentence below.
1.
In a heterozygous cross, the genotype ratio is typically _______.
Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet