Reading And Concept Review Packet Page 2

Pedigree

Pedigree chart traces traits over several generations in a similar way as a family tree. Pedigree charts are

useful in gathering background genetic information that can be used for medical reasons. When interpreting

pedigree charts remember

square

are

male

and

circles

are

females.

1. Use the below pedigree chart to answer the following three questions. Muscle type is not a sex-linked

characteristic.

a. Place the genotypes of each individual below its symbol.

b. What is the genotype of individual #3 and 4?

c. Can either individual #8 or 9 be homozygous?

d. Explain the family relationship that #12 has with #2.

2. Label the genotype for each of the individuals below its symbol on the pedigree chart (note: eye color is

not a sex-linked trait).

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