


Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
pedigree chart practice problems exercise questions
Typology: Exercises
1 / 4
This page cannot be seen from the preview
Don't miss anything!
Name _____________________ Date ______________________
Background Information: Pedigree charts are very important to many different fields of science. One reason they are important is because, they
help scientists understand the genetic patterns of diseases. It is important to be able to interpret pedigree charts in
order to learn the pattern of a disease or condition. Specifically, using a pedigree chart, you can tell if the disease or
condition is autosomal, X-linked, dominant, or recessive.
Before you start this activity it is important to review several symbols:
Procedure: A. First you need to become comfortable in making a pedigree chart. Complete the following examples. You may refer to your notes if necessary.
A. Identify the following pedigree charts as autosomal, X-linked, recessive, and dominant. Please explain your answer.
b. Lisa and Ashton got married and had three girls, Cari, Mary, and Terry. It was discovered that Lisa had muscular dystrophy. Terry married Perry and had two boys, Pike and Tike. It was discovered that Terry and Pike had muscular dystrophy. Draw a pedigree:
Autosomal or X-linked? Dominant or recessive? Name the types of muscular dystrophy this pedigree chart could
represent.
c. Debbie married David and had three children, Darren, Dawn, and Derek. David, Darren and Derek discovered they have muscular dystrophy. Derek married Didi and had two children, Denise and Destiny. Denise also has muscular dystrophy and married Dirk. They had two children, Dee and Deven. Dee has muscular dystrophy. Draw a pedigree:
Autosomal or X-linked? Dominant or recessive? Name the types of muscular dystrophy this pedigree chart could
represent.