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Chances Choices Review
Questions based on Chances Choices learned in Mrs. Moore's Honors Bio Class
44
Biology
9th Grade
12/13/2009

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Cards

Term
What is PKU (phenylketonuria)?
Definition
A genetic disease is which the person has elevated phenylalanine levels. It is autosomal recessive.
Term
What health effects does PKU cause?
Definition
Elevated levels of phenylalanine interfere with brains development and can cause retardation, seizures, destructiveness, and/or restlessness.
Term
How is PKU treated?
Definition
PKU is treated by giving the child a special diet low in phenylalanine, and feeding the baby a special formula.
Term
If a women and a man are heterozygous for PKU, what are the chances that their kid will have PKU? What are the chances that their kid will be a carrier? What are the chances that their kid will be homozygous dominant?
Definition
PKU- 25%
PKU carrier-50%
Homozygous dominant- 25%
Term

[image]Fill in the pedigree assuming that this is for a family with Abilism. Remember that Ablinism is autosomal recessive and that not all the people's genotypes will be able to be determined.

Definition

First generation (left to right): aa, Aa

Second generation (left to right): aa,Aa,Aa,AA(could be Aa, but mostly likely AA),aa,Aa,Aa,aa

Third Generation: aa,Aa,A?,A?,A?,aa,Aa,aa,Aa

Term
What is hemophilia?
Definition
Hemophilia is a sex-linked disorder carried on the X chromosome. It causes a deficiency of Factor VIII which makes it hard for the person's blood to clot.
Term
How is a person with Hemophilia treated?
Definition
Hemophilia is treated by giving the hemophiliac Factor VIII infusions which help their blood clot. They can also have joint replacements if arthritis becomes severe and exercise daily to build up muscle to protect weak bones.
Term
What health problems does Hemophilia cause?
Definition
Hemophilia causes the blood to not clot. This makes a hemophiliac be more at risk for dying from blood loss. When a hemophiliac gets a cut, the blood doesn't clot quickly,
Term
If a man with hemophilia and a woman without hemophilia, whose mother was a hemophiliac, had two daughters, what are the chances that both daughters will be completely healthy (not carriers)?
Definition
0%
Term
True or false: Alcoholism is often found in several generation of families.
Definition
True.
Term
True or False: Multiple genes contribute to alcoholism.
Definition
True.
Term
What are the 2 categories of Alcohol related disorders?
Definition
Alcohol abuse and Alcohol dependence (alcoholism)
Term
What happens to the risk of delivering a child with Down syndrome as a woman ages?
Definition
The risk increases.
Term
In down syndrome, which chromosome is affected and how?
Definition
Extra chromosome 21
Term
Drinking Alcohol while pregnant can affect the baby in what ways?
Definition
Can cause the baby to have FASD, down syndrome, unnatural facial features (small head, flat midface, low nasal bridge, smooth philtrum, etc.)
Term
Describe Chronic Villi Sampling (CVS)
Definition
Happens during the first trimester. Chorionic villi (fetal cells) are scraped off and suctioned. 1% death rate. Cells and Chromosomes studied.
Term
Describe Amniocentesis.
Definition
11th-18th week of pregnancy. Amniotic and shed fetal cells obtained. .5% death rate. Chromosomes studied.
Term
Describe an Ultrasound
Definition
Can be used throughout pregnancy. Only fetal anatomy is examined.
Term
What is familial hypercholesterolemia (FH)?
Definition
It is an autosomal dominant disorder which affects gene 19 making the body unable to remove LDL(a type of cholesterol).
Term
What health effects does FH cause?
Definition
Causes LDL to build up which can cause a heart attack.
Term
How is FH treated?
Definition
Treated with long term dietary and drug treatment.
Term
If a male who was homozygous recessive for FH and a woman who was homozygous dominant for FH had a kid, what are the chances that the kid would have FH?
Definition
100%
Term
What is Fragile X?
Definition
Fragile X is when someone has a defected gene on the X chromosome. It is recessive and x-linked. It causes mental retardation.
Term
How many base pairs does to human genome contain?
Definition
About 3 billion. :o
Term
RFLPs are used as a form of ________ testing?
Definition
Paternal testing
Term
What is paternal testing?
Definition
Testing DNA fragments of the kid(s) and the parents to see if both the parents actually gave birth to that kid.
Term
[image]In which test is the child really the kid of the mom and dad?
Definition
Test B
Term
Name some of the fetal effects of smoking.
Definition
Reduced blood flow, low birth weight, 30% higher death rates, more prone to infections.
Term
What are the differences of fraternal twins versus identical twins?
Definition

Fraternal Twins- Two placentas, two chorionic membranes

Identical twins- Single placenta, single chorionic membrane

Term
What is a neural tube defect (NTD)?
Definition
One of the most common defects in the US. Makes the spine in develop properly. Spine becomes "open". Death assured.
Term
What are the fetal effects of cocaine?
Definition
Reduced blood flow, small head, brain hemorrhage, premature birth, seizures
Term
What is B-thalassemia?
Definition
It is a defect which causes a red blood cell deficiency. Autosomal recessive
Term
In which ethnicities if B-thalassemia most common?
Definition
African decent, Mediterranean decent, and Southeast Asian decent.
Term
What is the treatment for B-Thalassemia?
Definition
Blood transfusions
Term
What health problems does B-thalassemia cause?
Definition
Early heart and spleen disease.
Term
What is Cystic Fibrosis?
Definition
This is a defect in which a faulty gene causes mucus to build up in the lungs which may become infected. Autosomal Recessive
Term
What are the health effects of Cystic Fibrosis?
Definition
Early death is caused by lung damage. Problems with intestines, pancreas, and liver. Infertility may result.
Term
What are the treatments for Cystic Fibrosis?
Definition
Transplants, chest thumping, and antibiotics
Term
If a woman with CF and a man who is homozygous dominant for CF have 4 kids, what are the chances that they will all be carriers of CF?
Definition
100%
Term
What is Huntington's disease?
Definition
It a defect in which a misshapen gene (#4) causes the death of nerve cells in the brain. Autosomal dominant
Term
When do the signs of HD show?
Definition
Around middle age
Term
How is HD diagnosed?
Definition
Doctors see how many CAG triplets you have. If it is 11-30, you're fine. If it is more than 30, you might have HD.
Term
What is the cure for HD?
Definition
There is no cure for HD
Term
If a man who is heterozygous of HD and a woman who doesn't have HD have kids, what are the chances that all of their kids will be healthy? 2 healthy? 1 healthy? 0 healthy?
Definition
1/8, 3/8, 3/8, 1/8
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