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Starter
recessive
Cystic fibrosis is a ………………..disorder.
This
means that in order to develop the condition you
two cystic fibrosis…………,
alleles one
need to inherit………
mother
from your ……………and
one from your father. If
you inherit only one cystic fibrosis allele, you are
carrier
symptoms
called a ………………..
and do not have……………...
symptoms
alleles
mother
carrier
recessive
two
© Snapshot Science, 2010
Activity
Imagine:
You have a brother who has cystic fibrosis. Your parents do not
have the illness.
What is the probability that you are a carrier? Draw out the
genetic cross to show how you figured this out.
Mum
c
C
CC
Cc
c
Cc
cc
Dad
C
25% chance
of not being
affected.
50% chance
of being a
carrier.
25% chance
of having
cystic fibrosis.
Activity
Jeans for Genes is a charity that raises money to go
to organisations that research cures into genetic
diseases like cystic fibrosis.
It is Jeans for Genes day and you have been asked to talk
about cystic fibrosis in a school assembly.
Your presentation needs to include:
•
•
•
•
The symptoms of CF
How the illness affects your brother’s life
How the illness is treated
How gene therapy may cure the illness in the future
Assessment
I am working at grade..
I can..
E
Remember
and use
Write down key
the facts
symptoms
of cystic
them
to answer simple questions
fibrosis
C
Apply
what
know symptoms
to new
Explain
whyI these
occur.
situations.
Use science
explain
Describe a treatment
fortoCF.
things.
A
Explain what gene therapy is and
Understand
explain
more
how it couldand
be used
in the
future
complex
scientific ideas. Link
to cure CF.
ideas together to explain the
‘bigger picture’