Quiz: The Pedigree Chart Reading

6 Questions | By Despinoza | Updated: Mar 21, 2022 | Attempts: 16501

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For a formal definition of the topic, it's a chart that is used to track the presence or absence of phenotype through one or more generations of a family. This quiz is a short assessment test for you consisting of six questions of the same.

Questions and Answers

1.

How many affected individuals are on this pedigree chart and how can you tell?
- A.
  
  6, those who are shaded black
- B.
  
  3, those who are shaded black with a slash
- C.
  
  11, those who have a slash
- D.
  
  12, those who are not shaded
2.

Is this chart following a dominant or recessive trait and how do you know?
- A.
  
  Dominant, because it shows up only in males
- B.
  
  Dominant because most of the people affected have died
- C.
  
  Recessive because it did not show up in every generation
- D.
  
  Recessive because it shows up only in males
3.

If this chart is following the recessive trait for albinism (people who are albinos, aa), then what is the genotype of the parents at the top of the chart?
- A.
  
  Aa and Aa
- B.
  
  Aa and aa
- C.
  
  Aa and Aa
- D.
  
  AA and AA
4.

How many members of this family are deceased?
- A.
  
  11
- B.
  
  6
- C.
  
  9
- D.
  
  4
5.

The parents that begin this chart are the first generation. How many of their children were albinos?
- A.
  
  2
- B.
  
  6
- C.
  
  4
6.

In the third generation, what is the genotype of the only child of the third mating from the left ?
- A.
  
  Aa
- B.
  
  AA
- C.
  
  A?
- D.
  
  Aa