Think you are a Biology buff? Do you want to test your genetic knowledge? This quiz is based on the pedigree diagram that represents biological relationships between an organism and its ancestors. Ever wondered how much you know about the pedigree diagram. Let's play this quiz and prove yourself!
X linked recessive; 1 in 2 for a son and 1 in 4 for a daughter
Autosomal recessive; 1 in 2
Autosomal dominant; 1 in 2
Autosomal recessive; 1 in 4
Mitochondrial; 1 in 2
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1 in 2
1 in 3
1 in 9
1 in 4 (Bayes’ Formula)
1 in 6
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1 in 4 for a son, close to zero for a daughter
1 in 2 both for sons and daughters
1 in 2 for a son and 1 in 4 for a daughter
1 in 2 for a son, close to zero for a daughter.
1 in 4 both for sons and daughters
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Likely to have mutations in different genes, locus heterogeneity
Likely to have more affected sons than daughters
Obligatory carriers
Most likely homozygous normal and the disease was caused by a new mutation
Not at risk of having another child with the disease
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1/4 X 1/4 X 1/4
Pretty close to 100% because new mutations are frequent
1/4
50%, if the other parent is normal
Probability of the unaffected parent being a carrier X 1/4
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1/2
2/3
Pretty close to 100% because new mutations are frequent
1/4
Virtually 0
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1/3
1/4
2/3
1/2
Virtually 0
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Close to zero for both sons and daughters
1 in 2 for a son, close to zero for a daughter
1 in 4 for both sons and daughters
1 in 4 for a son, close to zero for a daughter
1 in 8 for a son, close to zero for a daughter
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X linked dominant
X linked recessive
Autosomal dominant
Autosomal recessive
Y linked
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1 in 800
1 in 75
1 in 300
1 in 50
1 in 150
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1/4
1/4 X 1/4 X 1/4
Probability of the unaffected parent being a carrier X 1/2
Pretty close to 100% because new mutations are frequent
50% if the other parent is normal
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II 1 will be a carrier and II 3 will be normal
II 1 will be normal and II 3 will be a carrier
Both II 1 and II 3 will be carriers
Both II 1 and II 3 will be normal
II 1 will be affected and II 3 will be normal
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Autosomal dominant
X linked recessive
X linked dominant
Y linked
Autosomal recessive
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All sons will be affected, and all daughters will be carriers
No sons will be affected, and all daughters will be affected
1/2 the sons will be affected, and all daughters will be carriers
All sons will be affected, and all daughters will be affected
1/2 the sons will be affected, and 1/2 the daughters will be carriers
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75%
50%
25%
100%
Virtually zero
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1/100
1/150
1/25
1/50
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100% for a son and 50% for a daughter
100% for a son, zero for a daughter
50% for a son, zero for a daughter
50% for both sons and daughters
25% for a son and zero for a daughter
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1 in 4 for both sons and daughters
1 in 4 for a son, close to zero for a daughter
1 in 2 for a son, close to zero for a daughter
1 in 8 for a son, close to zero for a daughter
1 in 2 for both sons and daughters
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1 in 4
1 in 200
1 in 50
1 in 100
1 in 25
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10%
20%
50%
12.5%
33%
1 in 4
1 in 2
1 in 16
1 in 3
1 in 9 (Bayes’ Formula)
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25%
100%.
75%
50%
Virtually 0
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1 in 2
2 in 3
1 in 16
1 in 4
1 i n 6
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III -1 will not be affected and III -3 will be affected
Both III - 1 and III- 3 will be affected
III -1 and III -3 will NOT be affected
III -1 will be affected and III -3 will not be affected
It can not be determined whether III 1 and III 3 will be affected based on the data presented
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1/4
100%
2/3
1/2
Virtually 0
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III -1 will be a carrier and III - 2 will be normal
Both III -1 and III- 2 will be affected
Both III- 1 and III -2 will be normal
III -1 will be affected and III -2 will be a carrier
Both III -1 and III -2 will be carriers
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This is an x- linked recessive disease, the mutant allele was received from the mother (II- 2), and she will be a carrier
This is an x linked recessive disease, the mutant allele was received from the father (II- 1), and she will see a carrier
This is an autosomal dominant disease, the mutant allele was received from the mother (II- 2), and she will be affected
This is an autosomal dominant disease, the mutant allele was received from the father (II- 1), and she will be affected
This is an autosomal dominant disease, the mutant allele was not inherited from either the mother or father, and she will not be affected
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