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Contents
Inherited Diseases
What are inherited diseases?
Cystic fibrosis
Sickle cell anaemia
Huntington's disease
Haemophilia
Down's syndrome
Summary quiz
* of 58 © Boardworks Ltd 2004…read more

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What are inherited characteristics?
Each person inherits characteristics
from their parents.
How are inherited characteristics
passed on from one generation
to the next?
Inherited characteristics are passed
on in the chromosomes inherited
from your parents.
Each chromosome contains genes
that code for characteristics such as
eye colour, hair type and height.
Can a disease also be an inherited
characteristic?
* of 58 © Boardworks Ltd 2004…read more

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What is an inherited disease?
Genes pass on characteristics
from one generation to the next.
Each chromosome contains
hundreds of different genes.
A mutation in just one gene
can change a characteristic.
Sometimes this change has
a harmful effect on the body
and can lead to disease.
This type of condition is called
an inherited disease.
Is an inherited disease contagious?
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Examples of inherited diseases
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What causes an inherited disease?
Each matching pair of chromosomes contains
one chromosome inherited from each parent.
gene for a matching
characteristic gene
chromosome from chromosome from
female parent male parent
Each pair of chromosomes contains the same type
of genes that code for the same characteristics.
What are different versions of a gene called?
* of 58 © Boardworks Ltd 2004…read more

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