Genetics Help Please?

cystic fibrosis genetics
by mcbill

Question posed by Ashley P: genetics help please?
if one in every 22 people in the U.S is a carrier for Cystic fibrosis(autosomal recessive disease) what proportion of the U.S population would be expect to have c.f.?

My chosen answer:

Answer by gotaprofquestion
1 in 22 x 1 in 22 = 1 in 484

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Technorati Tags: GENETICS, help, PLease

Question posed by sandra k: If 2 heterozygous people for cystic fibrosis(carriers)have a child…..?
WHAT IS THE PROBABILTY THEY WOULD HAVE A CHILD WITH CYSTIC FIBROSIS?

The top answer:

Answer by phantomfoxx
25% they definitely would, 25% they would not, and 50% they would be carriers

If you know better then please let us know below.

Technorati Tags: child, cystic, fibrosiscarriershave, heterozygous, People

Carrier for Cystic Fibrosis?

Question posed by wendycass2000: carrier for cystic fibrosis?
I just found out that I’m a carrier for CF and we had my husband tested and he is a carrier for CF but has a different mutation.. we have scheduled an appt with a counselor but I was wondering if anyone had any information….

Most comprehensive answer:

Answer by clock
Hi Wend…,

You have asked a great question but I do not feel I can do justice to this question because you are already getting truly professional help but let me give you a few pointers.

Based on what you have said, “You are a carrier for CF, you also state that your husband is a carrier for CF”. This means that neither you nor your husband have the disease (CF). It means that both of you carry the gene for cystic fibrosis.

Genes are either dominant or recessive. The gene for CF is recessive. So if only one of you had the gene then your children would be carriers but not have the disease.

You and your husband carry the recessive. Therefore the recessive gene will appear in your children. Therefore they will have CF. Sorry. This is all I know. Please let me know if your counsellor tells you differently. Your counsellor and specialist will have the most up-to-date information. Good luck.

Please consider becoming an answer on this site. You will be able to give accurate and humane information.

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A question asked by I Sold Paradise [got suspended]: Currently – how far is research on Cystic Fibrosis? are we near a cure? are treatments advancing?

The top answer:

Answer by totalsurfer
my freind has it and they get treatment(pills, the shaking vest, hospital visits) but i havent heard of anything like a cure tho….i wish :’( but it sounds like they are advaning..once again, i hope :’(

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Technorati Tags: advancing, cure, Currently, cystic, fibrosis, near, research, Treatments

Question by jerrri: Do kids with cystic fibrosis usually wear face masks?
So apparently I have a little cousin that I didn’t even know I had. I met her at our family’s thanksgiving dinner. She has cystic fibrosis. I know a fair amount about the disease already, but she was wearing one of those surgical masks. Apparently she has a weakened immune system or something. I was just wondering if it was very common to wear masks like that, cause none of the people with cystic fibrosis that I have known ever did.

The No 1 answer:

Answer by Angels Serenity
It all depends on their immune system, like you said. My sister wore them from time to time if she was weakened due to getting over a case of pneumonia or getting over some other illness. Also if she was going to be around a lot of other people she sometimes wore one because the over amounts of mucus in the lungs made it easier to catch infections.

If it were up to me I’d have made her wear it constantly, even though she didn’t like people looking at her funny when she coughed. Maybe I’d still have her with me. I don’t know. But hopefully that answers your question.

How about adding your own answer to the comments below!

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What Mutation Causes Cystic Fibrosis?

Question by Ina: What mutation causes Cystic Fibrosis?
Can you also explain where on the chromosome the mutated gene is found?
How the mutation causes physical symptoms?
If the gene is recessive, do both alleles have to be recessive or do both alleles have to be heterozygous and have a 3:1 chance or homozygous and 4:0 chance.

My chosen answer:

Answer by ehsmom2006
Go to this website all of your answers will hopefully be there

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Technorati Tags: causes, cystic, fibrosis, Mutation

A question from Tiona C: true or false. All of the known cases of cystic fibrosis are caused by the same mutant allele.?

No 1 answer:

Answer by cuppacoffea
? all i know is the gene has to be present in the mom & dad

Whether you agree or disagree, why not leave your own thoughts below.

Technorati Tags: allele, cases, caused, cystic, false., fibrosis, known, mutant, same, true

Genetics Mathy Question?

Question posed by Sarah H: genetics mathy question?
please help i really need to know!

if 1 in 50 alleles are defective for cystic fibrosis. what proportion of the live births will have the disease?

another question:
if 1 in 20 are heterozygous for a recessive condition then what are the chances of an individual in that population being born with the condition.

really stuck and that is as much i know about the question :s

The top answer:

Answer by Dink87522
1. 2% will have the disease.
2. 5% chance.

I don’t quite understand you’re question so those may be wrong.

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Technorati Tags: GENETICS, mathy, question

A question from wanajoust: Chemistry Questions – What is a catalyst? Why are enzymes considered catalysts?…?
Give a good explanation to the following:

1. What is a catalyst? Why are enzymes considered catalysts?

2. Diagram (and label) an enzyme-substrate complex.

3. Explain, in layman’s terms, the mechanism of action (how does it work?)

4. Approximately how many enzymes are at work in the human body? Why are enzymes vital to the life of organisms?

5. What is the general term for conditions that arise as a result of a lack of enzymes in the body? (Think about it)

6. What caused the condition that affected the blue people of Kentucky?

7. What causes Tay Sachs disease?

8. What causes cystic fibrosis?

9. Jello packages warn that using fresh fruit such a pineapple or papaya will prevent jello from solidifying?However, cooking pineapple (or other fresh fruit) then adding it to the Jello will not affect its ability to gel. Explain this.

10. Some individuals have adverse reactions to consuming products like nutrasweet? What is the relationship between this and the enzyme phenylalanase?

Top answer:

Answer by Nathan
1. A catalyst is something that speeds up a reaction (eg heat)

Whether you agree or disagree, why not leave your own thoughts below.

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Question posed by ellieee .: What will happen to me if I get diagnosed with cystic fibrosis?
Im having all the tests for it next week as i have a few of the symptoms? im 13. what will happen

The No 1 answer:

Answer by Patricia M.
You would be the first in the world to be diagnosed this late in life.

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Technorati Tags: cystic, diagnosed, fibrosis, happen

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