This week I learned about pedigrees, and how to create a family tree. Pedigrees show the different types of traits that can be passed on through generations. In pedigrees different shapes and colors represent gender and traits. Circles are females, and squares are males. If the person has the trait, their shape is shaded in. If the person does not carry the trait, their shape is not shaded in. Females can only be carriers of the trait if it's sex linked, so their shape would be half shaded. Males can't be carriers of sex linked traits because of their Y chromosome. Family trees are diagrams showing the relationships between people throughout generations. In biology, for a project, we created a family tree online, showing the generations of our families. You can include the name, age, and location where they live on the website. You can also add if they are currently living, or if they have passed. The website also allows you to add peoples current or former spouses. As shown in the image below, is a pedigree chart.
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| http://faculty.ucc.edu/biology-atsma/pics/pedigree.gif |
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