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WorksheetsPedigrees
Total questions: 16
Worksheet time: 15mins
How many alleles does a person carry for a trait?
1
2
3
4
How many alleles does a child get from each parent for a trait?
1
2
3
4
In a pedigree, which shape represents a male?
circle
square
On a pedigree, this symbol represents a(n) __
not affected female.
not affected male.
affected male.
affected female.
On a pedigree, this symbol represents a(n) __
not affected male.
not affected female.
affected male.
affected female.
How many individuals are there in the 3rd generation?
1
2
4
6
How are individuals III-2 and II-4 related?
Brother and sister
Dad and daughter
Uncle and niece
Grandfather and granddaughter
Which individual in the first generation is a carrier?
I-1
I-2
If this pedigree shows a recessive disorder, what MUST the genotype of individual II-3 be?
HH
Hh
hh
What is the most likely genotype of the father?
AA
aa
Aa
AA or aa
If a trait is autosomal recessive, can two unaffected parents have an affected child?
No
Yes
If a trait is autosomal dominant, can two unaffected parents have an affected child?
No
Yes
Which shape is more likely to be shaded in for an X-linked recessive pedigree?
square
circle
Could a man who is unaffected with a recessive X-linked disorder have a daughter with the disorder?
yes
no
