The symbols used for a pedigree are. Pedigree charts worksheet s background information.
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A typical pedigree for a family that carries falconi anemia.
Pedigree worksheet answers pdf. What does a vertical line represent. Record your answers in the table on the next page. What does a horizontal line between a circle and square represent.
Pedigree review worksheet study the pedigree and answer the questions below. What is george s. Female unaffected female affected male unaffected male affected.
What do the colored squares represent. Use the pedigree below to answer 6 12. In pedigree analysis you need to look for any clues that will allow you to decide if the trait is dominant or recessive and whether it is linked to an autosomal chromosome or to the x chroomsome.
Pedigree worksheet a family tree of sorts is called a pedigree. What gave you the essential information to decide that ii 3 and ii 4 were heterozygous. Female unaffected female affected.
The symbols used for a pedigree are. If the pedigree cannot fit a mode of inheritance tell why. If clear he has.
Genetics pedigree worksheet a pedigree is a chart of a person s ancestors that is used to analyze genetic inheritance of certain traits especially diseases. What does the half. The symbols used for a pedigree are.
For each pedigree below tell if the trait can be autosomal dominant autosomal recessive and x linked recessive. Pedigree worksheet answer key interpreting a human pedigree use the pedigree below to answer 1 5 1. To answer questions 1 5 use the letter f to indicate the recessive falconi anemia allele and the letter f for the normal allele.
Pedigree analysis is an example of abductive reasoning. It is important to be able to interpret pedigree charts in order to learn the pattern of a disease or condition. Pedigree worksheet key genetics pedigree worksheet a pedigree is a chart of a person s ancestors that is used to analyze genetic inheritance of certain traits especially diseases.
Write the generation on the pedigree numbers roman numerals. What do squares represent. Brown eyes are a dominant eye color allele and blue eyes are recessive.
In a pedigree a square represents a male. Note that carriers are not indicated with half colored shapes in this chart. Shaded individuals have achondroplasia 6.
One reason they are important is because they help scientists understand the genetic patterns of diseases. Female unaffected female affected male unaffected male affected. What is arlene s genotype.
What do circles represent. The conclusions about inheritance above can be used to help analyze pedigrees. If it is darkened he has hemophilia.
Pedigree charts are very important to many different fields of science.
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