Long-haired and short-haired rabbits

Long-haired and short-haired rabbits

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources

A rabbit breeder carried out the following breeding with six different rabbits. Here the results of the three crosses.  

Cross 1

Cross 2

Cross 3

 

a)
i)
 
ii)
Which characteristic, long hair or short hair, is dominant?     _______________
 
Give evidence for your answer.
 

 
 
b)
Using the letters H and h to represent hair length in rabbits, complete:
 
 
i)
 
The genotypes of the parent rabbits in Cross 3 are __________ and __________
 
  ii)
The punnet square to show Cross 1 is:
 

 
c)
The breeder wanted to establish a pure (true) breeding strain of short-haired rabbits.
 
  i)
Which of the parent rabbits (numbered 1-6) would most likely be chosen? 
 
Number     _________
 
  ii)
The offspring of which cross (1, 2 or 3) would most likely be chosen?
 
Cross     __________
Task administration: 
This task can be completed with pen and paper.
Level:
5
Description of task: 
The results of three different crosses between long-haired and short-haired rabbits have been provided. Students state, with a reason which characteristic is dominant and complete a punnet square for one of the crosses.
Curriculum Links: 
Science capabilities
The capabilities focus is brought about by the conversations you have and the questions you ask.

Capability: Interpret representations
This resource provides opportunities to discuss the use of symbols and science representations to interpret punnet squares in genetics.
Science capability: Interpret representations (TKI)
Science capabilities: 
Answers/responses: 
 

Y10 (05/1997)

a) i)
ii)
Short hair
In Cross 1 two short-haired rabbits produced a long-haired/all short-haired rabbits young produced in Cross 2, or any similar explanation.
easy
difficult
b) i)

ii)

hh and Hh

difficult

difficult

c) i)
ii)
4
1
moderate
very difficult