Genetic Counselor’s Report:
How was this inherited?
People who inherit an unbalanced transaction involving chromosome 21.
Is this a dominant or recessive disorder? Gene or chromosome mutation? Sex-linked or autosomal?
It is neither dominant or recessive
Chromosome mutation
Autosomal recessive
What genotypes would the parents have to be to have a child with this disorder? (Include all possibilities, if applicable)
The parents would have to have trisomy 21 to give their child down syndrome.
What is the possibility that this is passed on?
The risk of passing it down is 35% to 50%.
Show probability of being passed on in a Punnett Square (if applicable) Sketch below.
Create a potential pedigree for your future family that shows the disorder being passed down through 3 generations. Sketch bellow.