Transcript Passing on genetic information from parents to children An explanation of autosomal recessive inheritance © 2013 NHS National Genetics and Genomics Education Centre Genetics and.

Passing on genetic information
from parents to children
An explanation of autosomal
recessive inheritance
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
• Here are some PowerPoint teaching slides which
demonstrate the transmission of an autosomal
recessive condition from parent to child, please feel
free to use these within your teaching
• Some parts of the animations run automatically;
others require a mouse click
• Most slides have notes with further information
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
The 46 human
chromosomes
seen down the
microscope
Hundreds of genes are located on each chromosome
(The dark bands on the chromosomes are due to a special staining technique and are not genes as these are too
small to see)
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
The 46 human chromosomes arranged in their 23 pairs (these
are the chromosomes of a normal male)
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
Chromosome
pair
Position of
particular gene
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
Has the
condition
Altered gene
Altered gene
Unaffected
carrier for the
condition
Usual gene
© 2013 NHS National Genetics and Genomics Education Centre
Altered gene
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk
Autosomal recessive inheritance where both parents are carriers
Parents
Carrier for the
condition
Sperm or eggs
Carrier for the
condition
Autosomal recessive inheritance where both parents are carriers
Parents
Carrier for the
condition
Sperm or eggs
At conception
Carrier for the
condition
Autosomal recessive inheritance where both parents are carriers
Parents
Carrier for the
condition
Carrier for the
condition
Sperm or eggs
At conception
Does not have the
condition, non-carrier
Carrier for the
condition
Carrier for the
condition
Has the
condition
This animation is part of a series describing modes of
inheritance
To access these and other resources for teaching and
learning genetics, please visit:
www.geneticseducation.nhs.uk
© 2013 NHS National Genetics and Genomics Education Centre
Genetics and genomics for healthcare
www.geneticseducation.nhs.uk