Homework Answers
Tuberous sclerosis is an autosomal dominant trait.
Genotype of normal individual - tt
Genotype of affected individual - TT
Genotype of carrier individual (shows few symptoms - Tt
Set A
Both parents are carriers - Tt
| Gametes | T | t |
| T | TT (affected) | Tt (carrier) |
| t | Tt (carrier) | tt (normal) |
Total progenies - 4
Affected progeny - 1/4
Carrier progeny - 2/4
Normal progeny - 1/4
Set B
One parent is carrier - Tt
Other parent is normal - tt
| Gametes | t |
| T | Tt (carrier) |
| t | tt (normal) |
Total progenies - 2
Affected progeny - 0
Normal progeny - 1/2
Carrier progeny - 1/2
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