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Becker Muscular Dystrophy Pedigree Project

Becker Muscular Dystrophy Project for Life Science

hailey sell

on 16 May 2014

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Transcript of Becker Muscular Dystrophy Pedigree Project

Pedigree Project: Becker Muscular Dystrophy

The royal family: The OnoFoyers
Punnet Squares for King Pat, Prince Bob, and Tiny Prince Timmy
Sarah is a carrier who is going to have a baby with Jon who does not have Muscular Dystrophy. This is how their baby could possibly turn out. If it is a boy then he has a 1 in 2 chance of having Muscular Dystrophy. If they have a girl, then the girl will have a 1 in 2 chance of being a carrier.
If it is a boy who does not have the disease and the girl is not a carrier, then the child will not have the disease. The child is most likely to have white skin since this Jon and Sarah are both Caucasian. Their child will also have freckles since both parents are homozygous dominant. The child will have heterozygous medium eyelashes since Sarah is homozygous long and Jon is homozygous short(Incomplete dominance). Both parents hair color is dominant brown, so the child will have brown hair. This child will have wavy hair because Sarah's hair is curly and Jon's is straight. This occurs because of incomplete dominance. This child will have a 50% chance of having a widow's peak because because parents are heterozygous dominant. The child will have heterozygous dominant dimples because Jon is homozygous recessive and she is heterozygous dominant. The baby will have thin lips because Sarah and Jon both have the recessive trait. The child will be a heterozygous dominant for unattached earlobes, since Sarah's earlobes are attached and Jon's are not. Having attached earlobes is a recessive trait. Lastly, the child will have a small straight nose due to the fact that both parents have the recessive trait.
What is Becker Muscular Dystrophy?
Becker Muscular Dystrophy is where there is a mutation on the DMD/BMD gene which is located on the X chromosome, the 23rd pair. Dystrophin is a protein that our bodies need in order to protect and stabilize our muscle fibers. We need this protein in order to have strong and healthy muscles. When you have this disease your muscles will weaken and waste away, because of weak muscle fibers, eventually causing death. This disorder is a recessive sex-linked trait that is more likely to be found in males, but it can be found in females. Some symptoms include waddling when walking, falling down the stairs/frequent falls, learning disabilities, trouble leaping and running, and
difficulty getting up from a sitting or lying position.
Only women can be carriers of this disease. Most
adults with Becker Muscular Dystrophy can walk
up until the age of 30, and then need use of a

If one of them had a baby
So far there is no cure for the disease. Some things that can help are occupational/physical therapy, orthopedic instruments such as wheelchairs are helpful, and also speech therapy.

"Duchenne and Becker Muscular Dystrophy." - Genetics Home Reference. N.p., n.d. Web. 18 Mar. 2014. <http://ghr.nlm.nih.gov/condition/duchenne-and-becker-muscular-dystrophy>.

"Muscular Dystrophy." Symptoms. N.p., n.d. Web. 18 Mar. 2014. <http://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/basics/symptoms/con-20021240>.

"Muscular Dystrophy Types & Causes of Each Form." WebMD. WebMD, n.d. Web. 18 Mar. 2014. <http://www.webmd.com/children/understanding-muscular-dystrophy-basics>.

"Becker Muscular Dystrophy." Muscular Dystrophy Association. N.p., n.d. Web. 20 Mar. 2014. <http://mda.org/disease/becker-muscular-dystrophy/overview>.
Born 1923 Born 1922 Born 1925
Muscular Dystrophy is 28% less likely to happen in African American families.
However, it is more likely
to happen in males. This is
a Caucasian family.
By Hailey Sell and Sarah Rockecharlie Mrs. Humphrey
3rd Block

This is a young child with muscular dystrophy. He is using walking sticks to help him move around more easily.
This is a man with muscular dystrophy who uses a wheelchair to get around.
Jon Jr.
XB Y or Xb Y
Sarah Jr.
*Becker Muscular Dystrophy is one of the more mild forms of Muscular Dystrophy.
Duchenne Muscular Dystrophy is one of the more severe ones.
XB Xb or XB XB
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