PPT-PEDIGREES What is a Pedigree?

A visual representation of how a trait is inherited through generations Earliest generations are at the top Each row is one generation Circle female Square male Dark shading . Heredity in families. Introduction. A . pedigree is a diagram of family relationships that uses symbols to represent people and lines to represent genetic relationships. These diagrams make it easier to visualize relationships within families, particularly large extended families. Pedigrees are often used to determine the . How traits are passed down . Warm Up 3/20/12. Read the scenario below and create a . punnet. square based on the information given.. Andy and Amy just got married. Andy has brown hair with a genotype of Bb. Amy is a blond with the genotype of bb.. Complex Inheritance Patterns:. Autosomal v. X-Linked. Pedigree. Family Tree. Genealogy. Inheritance . Diagram. Relates . parents and offspring for numerous generations. Shows relationships between parents, children, grandchildren…. Genetics. Complex Characteristics and Sex Influenced Traits. Complex Characteristics. Characteristics that are due to more than one gene. . Eye color, hair color, skin color, height, etc.. Most characteristics where there is a wide range of possibilities. . Introduction to Pedigree Genetics. Mr. Nichols. PHHS. Cartoon of the Day: Get . Punked. !. Objectives. The Student will be able to:. 1.) Finish the 2 trait . P. unnet square practice problems. . 2.) Sketch and describe the basic anatomy of a family pedigree.. The family tree of genetics. Overview. What is a pedigree? . Definition. Uses. Constructing a pedigree . Symbols. Connecting the symbols. Interpreting a pedigree . What is a Pedigree?. A pedigree is a chart of the genetic history of family over several generations.. Analyzing family trees for patterns of inheritance. Interpreting Pedigrees. What is a pedigree?. How can we look for patterns to determine inheritance of traits?. Pedigrees. Pedigrees are genetic family trees.. Humans have 23 pairs of chromosomes, containing 3 billion letters of DNA code and 24,000 genes.. One set comes from MOM and one set comes from DAD. There are 22 pairs of autosomes and 1 pair of sex chromosomes, X and Y.. Punnett. Squares. Juan’ya Simmons. Traits. Traits are characteristics you get from your parents for example eye color. Eye color is a recessive trait, so if you dad has brown eyes and your mom has hazel eyes there’s a possibility you can have hazel eyes. You can see when you have hazel eyes around the pupil is brown and the rest is green.. What is a pedigree?. A pedigree is a family tree that shows how a trait is passed from generation to generation. Some Pedigree Symbols. - person being studied. - individuals having a common ancestor. Video-Down Syndrome. http://www.sosq.vcu.edu/videos.aspx. The image you see is called a karyotype and there is a chromosome missing. How do you think this happens? . Work with a partner and answer the following question:. Program Organization. Data integrity checks:. Duplicate . records . eliminated. Parents . without . records added . to the . pedigree. Animals . cannot appear as . sires . and . dams. Numeric or character IDs. :. A. nalyzing . the pattern of inheritance of . a . special trait . throughout a family. . And it shows . the presence or absence of a trait . with in the family across generation.. Genotype: . Genetics. What is a Pedigree?. . Analysis of inheritance of genetic conditions in human families.. . They look kind of like a family tree, but hold more information.. Pedigree Basics. Female. Male. Affected Male.