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WorksheetsPedigree Practice
Total questions: 15
Worksheet time: 18mins
Give the genotype for person II-1, for this autosomal trait.
GG
Gg
gg
we cannot be 100% sure of the genotype
There are no carriers for Huntington's Disease - you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait? (hint - Every generation has a shaded person)
Dominant
Recessive
the male is heterozygous and the female is homozygous.
the male is homozygous and the female is heterozygous.
Both the male and the female are homozygous.
Both the male and the female are heterozygous.
How many individuals are there in the 3rd generation?
1
2
4
6
How many males are carriers?
2
3
4
5
If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?
HH
Hh
hh
None of the above
This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father in generation 1?
Aa
AA
aa
A?
Individuals that are shaded in have premature hair whitening. Is this trait dominant or recessive? How do you know?
Dominant because it skips generations
Dominant because it is present in every generation
Recessive because it skips generations
Recessive because it is present in every generation.
Cystic Fibrosis is a recessive trait. Which phenotype will show from a heterozygous genotype (Cc)?
CC
Cc
cc
Normal (unaffected or carrier)
Cystic Fibrosis (affected)
