Pedigrees And Inheritance Patterns Question Preview (ID: 35610)


Pedigrees And Inheritance Patterns. TEACHERS: click here for quick copy question ID numbers.

1) Huntington's disease is a dominant trait. What are the possible genotypes of an individual with Huntington's disease?
a) HH
b) hh
c) Both HH and Hh
d) Both Hh and hh

2) A horizontal line connecting two individuals represents
a) a marriage
b) children
c) twins
d) affected indivudials

3) The roman numerals on the side of a pedigree represent
a) the number of individuals in each generation
b) the generations
c) the number of marriages
d) the number of kids

4) A half filled circle represents a
a) carrier
b) male with an incomplete dominance trait
c) an affected female
d) female carrier

5) Paula is affected by a trait. Her husband is not. They have 3 sons; one son has the trait but the other two sons do not have the trait. What type of pedigree is shown?
a) sex-linked recessive
b) autosomal dominant
c) autosomal recessive
d) sex-linked dominant

6) Mario and Elaine do not have the trait. Of their 5 children, all 4 boys have the trait but their 1 daughter does not have the trait. What type of pedigree is shown?
a) Sex-linked recessive
b) Autosomal recessive
c) Autosomal dominant
d) Sex-linked dominant

7) Manny and his sister have the trait. Their parents do not have the trait. What type of pedigree is shown?
a) Autosomal dominant
b) Sex-linked recessive
c) Sex-linked dominant
d) Autosomal recessive

8) Familial hypercholesterolemia is an autosomal dominant disorder. Both Alvin and his wife are heterozygous for the disorder. What are the chances of their offspring having the disorder?
a) 75%
b) 50%
c) 25%
d) 100%

9) In a pedigree, an affected male will be drawn as
a) a filled in circle
b) a half filled square
c) a filled in square
d) a vertical line

10) Colorblindness is a sex-linked trait that is represented with the recessive allele (c). What would the parents' genotypes be if they have a colorblind girl?
a) XcY and XCXC
b) XCY and XCXc
c) XCXC and XCY
d) XCXc and XcY

11) Linda has heterozygous type B blood. Her husband, Leo, is AB blood. What is the probability in fraction that they will have a child with A blood?
a) 1/4
b) 2/4
c) 3/4
d) 4/4

12) Adrian is type A blood and his wife Carla is type B blood. What are Adrian and Carla's genotypes if 50% of their children have AB blood and the other 50% have A blood?
a) IAIB and IAi
b) IAi and IBIB
c) IAIA and IBi
d) IAIB and IAIA

13) Purple flowers are dominant to white flowers. What are the parents' genotypes if they produce all offspring that are heterozygous for purple flowers?
a) Pp and Pp
b) PP and pp
c) PW and PW
d) PP and WW

14) Dimples (D) are dominant to not having dimples. Freckles (F) are dominant to not having freckles. What is a person's genotype if they have dimples but no freckles?
a) ddff
b) DdFf
c) ddFF
d) DDff

15) A red flower and a blue flower cross and produce offspring that have purple flowers. What type of inheritance pattern is shown?
a) Codominance
b) Incomplete dominance
c) Complete dominance
d) Sex-linked trait

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