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Assignment # Pedigrees. Biology Mrs. McCarthy. Studying human heredity Time between generations is B. Number of offspring produced is C. Controlled experiments are. too long. too small. not possible. A diagram that shows the presence or absence of a trait in
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Assignment #Pedigrees Biology Mrs. McCarthy
Studying human heredity • Time between generations is B. Number of offspring produced is C. Controlled experiments are too long. too small. not possible.
A diagram that shows the • presence or absence of a trait in • each member of each generation • Pedigree charts – A. This is the symbol for a female: B. This is the symbol for a male:
has a clear symbol • A normal person (no disease) - • A person with a disease: • A carrier of the disease: has a solid or colored symbol has a symbol that is half colored
Alkaptanuria Alkaptanuria is a rare inborn error of metabolism of tyrosine due to deficiency of homogentisic acid (HGA) oxidase leading to accumulation of HGA in various tissues.The hallmark of the disorder is a triad of degenerative arthritis, ochronotic pigmentation and urine that turns black on alkalanization. Other manifestations of the disease include degenerative cardiovascular diseases. Treatment of the condition includes vitamin C that partially ameliorates the condition by impeding the polymerization of HGA.
METHEMOGLOBINEMIA is a disease caused by a blood disorder in which the blood does not appear red. Individuals may appear to have chocolate-brown lips or even blue skin.
III. Example of a Pedigree Look at your worksheet for the pedigree. • Are males or females more likely to have this disease? • How many females are carriers? • How many males are carriers? • Is this a sex-linked trait?
Create a pedigree • Draw a pedigree of a family that has: 1. A mother that is a carrier for hemophilia 2. A father that is normal XH Y XH XHXH XHY XHXh Xh XhY
Create a pedigree • Draw a pedigree of a family that has: 1. A mother that is a carrier for hemophilia 2. A father that is normal 3. They have 2 daughters and 2 sons
Xh Y XH Xh 4. A carrier daughter marries a man with hemophilia 5. They have 2 daughters and 2 sons XHXh XHY XhXh XhY
4. A carrier daughter marries a man with hemophilia 5. They have 2 daughters and 2 sons
Make a pedigree to the song “I’m my own grandpaw”
I’m my own grandpa! Can you make a Pedigree for this situation?
Many, many years ago when I was twenty-threeI was married to a widow who was pretty as could be.This widow had a grown-up daughter who had hair of red.My father fell in love with her and soon they, too, were wed.
This made my dad my son-in-law and changed my very lifeFor my daughter was my mother, 'cause she was my father's wife.To complicate the matter, even though it brought me joyI soon became the father of a bouncing baby boy.
My little baby then became a brother-in-law to dadAnd so became my uncle, though it made me very sadFor if he was my uncle, then that also made him brotherTo the widow's grown-up daughter, who, of course, was my step-mother.
ChorusI'm my own grandpawI'm my own grandpawIt sounds funny I knowbut it really is soOh, I'm my own grandpaw.
My father's wife then had a son who kept them on the runAnd he became my grand-child, 'cause he was my daughter's son.My wife is now my mother's mother, and it makes me blueBecause, although she is my wife, she's my grandmother too.
If my wife is my grandmother, then I am her grandchildAnd every time I think of it, it nearly drives me wild (This has got to be the strangest thing I ever saw)As husband of my grandmother, I am my own grandpaw .
ChorusI'm my own grandpawI'm my own grandpawIt sounds funny I knowbut it really is soOh, I'm my own grandpaw.
HOMEWORK: Pedigree worksheet
