scan the code and read how to keep your pet alive forever! project.pdf · genetics project: family...
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Scan the code and read how to keep your pet "alive" forever!
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Family Pedigree Project
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Genetics Project: Family Pedigree
A pedigree is a tool to show how traits are inherited from one generation to the next. You will create a family pedigree to show how traits have been inherited in your family. Follow the steps below in creating this project.
1. Decide on the characteristics that you want to investigate. These might include: height, eye color, hair color, freckles, ear lobes, widow’s peak/straight hairline, toe length, curly/straight hair...................
2. Research your family (or a friend’s in the case of adoption) to learn about the genes that you have inherited. Where did they come from? Who do you share them with?
3. Create a rough draft of a pedigree of your family. Follow these rules:
♣Use circles to represent females and squares to represent males.♣Use horizontal lines to show a marriage.♣Use vertical lines to show offspring.
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Tongue Rolling. The ability to roll your tongue upwards to form a closed tube. The sides of your tongue will meet at the top of the tube if you can roll your tongue. When students first learn tongue rolling is an inherited trait, they may be surprised and comment that if only people who can't roll their tongues would practice, they could learn to roll their tongues too. Tongue rolling, then, is an example of a "motor skill" that is inherited. Is a good golf swing or a good free throw shot any different?
Widow's Peak. If you have Widow's Peak, your forehead hairline will have a downward dip in it, as in a heart. Lift up the hair of your forehead to score this trait. People without widow's peak have a smooth hairline with no dip. Men starting to go bald (or already bald) may be unable to score this trait.
Dimples. Indentations in the cheeks, especially noticeable when smiling. Score as "yes" only if a dimple on each side is present. Score those with a dimple on only one side as "no."
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Cleft Chin. A dimple or cleft in the center of the chin. Famous examples: John Travolta, Kirk Douglas.
Earlobe attachment. Earlobes are attached if the bottom lobe is attached directly to the head. Earlobes are free if the lobe hangs free.
Finger Hair. Officially known as Middigital Finger Hair. Consider your fingers to have 3 segments, top, middle, and bottom. If hair is present on the middle segment of any finger, even just one hair, you have middigital hair. Do not score the bottom segment of your fingers for hair, just the middle segment. Look closely, as is can be difficult to score. Hair may be present on only one finger or very fair, especially in children.
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Index finger length. Length of index finger in relationship to ring finger. Which is longer?
Second toe length.
Length of second toe in relationship to big toe. Which is longer?
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Widow's peak: Free ear lobes: Dimples: Cleft chin: longer second toe: Rolling tongue: Bent Pinkies: mid digit hairTaster
http://chroma.gs.washington.edu/outreach/genetics/traits/index.html
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?Pedigree Project
due April 21st