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GSLC
Deafness
Map a gene for a genetic disorder yourself!
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This exercise is approximately 5 pages.

Some forms of deafness are genetically based. This means that they can be passed down (inherited) depending on the genetic circumstances.

Examine the pedigree below to figure out which individuals show the deafness phenotype:

family tree

key



Below you'll find genetic jigsaw puzzles for 8 individuals from the family above. The number of each puzzle corresponds to the number of the individual in the pedigree. See enlarged versions of the puzzles.

Here's the challenge! Find the piece of the genetic puzzle that is responsible for deafness. Exactly what are you looking for?

To make it easier on yourself, print out the puzzles and compare them.

 1Puzzle #1 - all purple pieces  2Puzzle #2 - all blue pieces
 3Puzzle #3 - purple and green pieces  4Puzzle #4 - red, green, blue, & purple pieces
 5Puzzle #5 - all orange pieces  6Puzzle #6 - orange, green, and purple pieces
 7Puzzle #7 - all yellow pieces  8Puzzle #8 - white, green, orange, and purple pieces

Need a hint?

How would a scientist think about this problem?


Which puzzle piece is responsible for deafness? Choose the number of the puzzle piece that you think contains the gene.

Puzzle with numbered pieces

How do you know your puzzle piece is the right one?

HERE is the ANSWER!

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