by cstmweb

Question by edgygirl: Genetics question for Biology?
imagine that you are a genetic counselor, and a couple planning to start a family comes to you for information. Charles was married once before, and he and his first wife had a child with cystic fibrosis. The brother of his current wife, Elaine, died of cystic fibrosis. What is the probability that Charles and Elaine will have a child with cystic fibrosis. Neither Charles or Elaine has cystic fibrosis.
I know the answer is 1/6 but how do you get that?
how many punnet squares do i draw? and put what on each of the two sides. thats what i need help with.

No 1 answer:

Answer by Yote
do a punnet square!

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Technorati Tags: Biology, GENETICS, question

A question from kobe24: Are there carrier forms and or lethal forms of cystic fibrosis ?

Most comprehensive answer:

Answer by xXBlizzXx
Cystic fibrosis never really kills suddenly, but it does shorten lifespan somewhat, so I would call all forms of it “lethal”.

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Technorati Tags: Carrier, cystic, fibrosis, forms, lethal, there

Question posed by Kenzie: Anyone with cystic fibrosis?
Just wondering lol

And if you do know someone with cystic fibrosis, what is their lung function and what are their treatments? i’m sorry, you don’t have to say i’m just really curious…i’ve never met anyone else with it so i don’t really know what’s “normal” and i guess that’s what i’m asking.

my lung function (fev1) is around 60%.
I do vest 30 mins 3 times a day
pulmozyme, hypertonic saline, tobi, zithromax, vitaman d and e, multivitams, enzymes, and right now cipro and bactrim and prednisone.

Best answer:

Answer by Dixie
One of the toughest things about CF, I think, is that you all can’t meet others with it because of possible contamination of bacteria.

I work in a CF clinic. You don’t say how old you are, but I’m guessing teenage. Your lung function is about average, and you take about the same amount of meds as most of the teens and 20 somethings in my clinic (leaving out the cipro and bactrim, sounds like you’re having an exacerbation).
Most of my patients do the vest twice and day and bump it up to three or four times when they’re sick.
I’m sure there are support groups on line, hope you meet up with someone that way.

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Technorati Tags: anyone, cystic, fibrosis

by k-ideas

A question asked by damigurl05: Genetics Pt. 1?
A man and a woman are both heterozygous for Cystic Fibrosis, an autosomal recessive disease. They have 16 pre-embryos screened for the disease. How many will be homozygous dominat, homozygous recessive and heterozygous. How many will be affected, how many will be carriers, and how many will not be affected?

Best answer:

Answer by TinklePuff741
C – Normal allele (dominant)
c – Cystic fibrosis allele (recessive)

Affected genotype: cc (homozygous recessive)
Carrier genotype: Cc (heterozygous / carriers)
Unaffected genotype: CC (homozygous dominant)

Man: Cc
Woman: Cc

Probability of embryos having:
CC genotype = 0.25
Cc genotype = 0.50
cc genotype = 0.25

Multiply the probability by the whole number (16) of embryos to get the predicted number of embryos with each genotype:
CC = 0.25 x 16 = 4
Cc = 0.50 x 16 = 8
cc = 0.25 x 16 = 4

Agree or disagree? Leave your own thoughts below.

Technorati Tags: GENETICS

by fakelvis

Question by Tyler: Which disease is more rigorous and hard to endure? HIV/AIDS or Cystic Fibrosis?
For my junior year AP English Language class, I need to write a 1,500-2,000 word research paper proving a scientific point. I want to prove one of the above stated diseases is more rigorous and hard to endure with symptoms, treatment, etc.but I can’t really decide which one is more of an “ugly” disease? Thank you!

Chosen answer:

Answer by Q
Does one have to be worse? Couldn’t you argue that one is worse in some respects, while the other is worse in other respects?

Cystic Fibrosis–because the feeling of not being able to breathe is horrible horrible horrible. And you’re guaranteed to die at a young age.

AIDS–because there is a lot of prejudice against those with AIDS. And you never know what sickness you’ll get next.

But to a certain extent you can’t compare suffering. And because both diseases have different courses to them, some with CF are far sicker than some with AIDS, while others with AIDS are far sicker than a given person with CF.

Provide your own answer to this question below!

Technorati Tags: cystic, disease, endure, fibrosis, hard, HIV/AIDS, more, rigorous

A question from MaeMae: Does ne one have a kid or relative that has cystic fibrosis?
if so what were the symptoms or how did u find out they had CF and how are they now?

Top answer:

Answer by *29 wks with babygirl*
i have a cousin [my mom's sister's oldest son] has it..he is 14 going on 15 and he is in and out of the hospital..he has to be home schooled bc he will get sick from other kids..he has a machine that he uses every night and morning that gets all the mucus and fluid out of his lungs..he is still alive so thats all that matters..and we found out he had it when he was an infant..im not really sure what symptoms are..i just know that they’re immune systems are really bad and so they cant fight off colds or flus alot of the time on their own..anyone that has cystic fibrosis doesnt live long..most of them die before they are even 20..and definatly by the time they are 30 :/ this is so sad bc i know he wont make it much longer as much as hes in the hosp..it totally sux but you gotta deal with it ya know..

How about adding your own answer to the comments below!

Technorati Tags: cystic, fibrosis, relative

A question from Mo: What is the percentage of carriers of cystic fibrosis in the united states?
It is estimated that 12 million people are carriers but I need it in a percentage for a question. Could anyone please give me an answer in a percentage and confirm that 12 million people are carriers?

Most detailed answer:

Answer by jandy
1 in 25,000. go to cff.org or CFWW.org. carriers don’t have the disease, if two carriers have a child, 1 in 4 of the kids gets it, but I’ve seen some families that 2 kids have it, est 30,000 people in the US has disease, 70,000 worldwide, many others not diagnosed.

Agree or disagree? Leave your own thoughts below.

Technorati Tags: carriers, cystic, fibrosis, percentage, states, united

Cystic fibrosis symptoms are mainly bad breathing and bad digestion. Both of which we will discuss in a little bit more detail today. Another interesting tell-tale indicator is the clubbing of the fingers. That we will also talk about in a bit.

Bad breathing has very little to do with the stink from our breath when we suddenly get the fondness for eating spicy foods straight for a month. Rather, it is a difficulty in breathing because the lungs will have too much mucus in them.

Bad digestion will have your stool or feces having a clayey color. The normal color of stool should be of a darker brown hue. The paling of your stool color may mean that your bile is not being produced properly, or is not being delivered properly to be excreted.

Clubbing of the fingers means that you have very little oxygen being delivered to the cells in the tips of your fingers, making them swell. Aside from the club shape of your fingertips, the nails also bend in an odd way far fro the usual.

Cystic fibrosis symptoms mainly happen because of the large glands in a person, glands are what produce sweat and mucus for the protection of the body. Mucus usually have in them leukocytes or white blood cells. These cells fight off germs and substances not found in the body that might cause harm to it.

Mucus production is very normal for everybody. The problem starts when the glands produce too much mucus. If the rate of mucus production is faster than the body can break up the mucus, long after the germs have been killed or the harmful poison taken out, then a person can either drown if mucus is in the lungs.

Most physicians would advise those with cystic fibrosis symptoms to just cough it up, but we shall not do that. What we will do is to find your natural breathing rhythm to help your body break down excess mucus and thin it out. This can actually result in symptoms going away without medication, without fancy supplements or gym exercises. Don’t do anything as a result of reading this, except head over here to find out how the Oxygen Remedy helps reduce cystic fibrosis symptoms bigtime, even eliminating most of the symptoms.

Learn more about Fibrosis symptoms #1. Stop by Richard Geller’s site where you can find out all about Cystic Fibrosis symptoms#2 and what it can do for you.

Technorati Tags: cystic, Cystic Fibrosis, lung disease, lung diseases, lung pain, lungs diseases, symptoms fibrosis of lungs, web md symptoms, what is cystic fibrosis

A question from Secret Wish: Cystic fibrosis (CF) is caused by a recessive allele. A child has CF, even though neither of his parents has ?
CF. What can you conclude about the parents?

A. they are both homozygous dominant for the CF gene.

B. they are both homozygous recessive for the CF gene.

C. one is homozygous dominant for the CF gene, the other is heterozygous.

D. one is homozygous recessive for the CF gene, the other is heterozygous.

E. they are both heterozygous for the CF gene

Top answer:

Answer by snickers
E. They are both carriers of CF.

Do you know better? Why not leave your own answer in the comments below!

Technorati Tags: allele, caused, child, cystic, even, fibrosis, neither, Parents, Recessive, though

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

What do you think? Leave you answer below!

Technorati Tags: GENETICS, help, PLease