answersLogoWhite

0

Add your answer:

Earn +20 pts
Q: Two parents who were phenotypically normal had to children The oldest was also phenotypically normal but the younger child had cystic fibrosis what is happening in the cross?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

A couple who are both carriers of the gene for cystic fibrosis have two children who have cystic fibrosis What is the probability that their next child will be phenotypically normal?

If both parents are carriers on cystic fibrosis, just because two children may have the disease it doesn't mean that say,a further 3 children in future will be "normal". Inheriting genes is like a lottery. I can say though that because cystic fibrosis is recessive, every offspring born under carriers will always have a 75% chance of being phenotypically normal.


Why were children separated from the parents in world war 2?

So that the children would be safe from the bombings happening constantly.


What diseases cause fibrosis in the body?

Cystic fibrosis is caused by a mutation in a gene most common to Caucasian children in the USA. It is a hereditary disease and both parents must carry the disease in order for it to be passed down.


What is the probability of two healthy people where one is a carrier being parents to a child born with cystic fibrosis?

If only one person is a carrier of cystic fibrosis than there is no chance of having a child with it. Both parents have to be carriers and even then there is only a 25% chance. If only one carries than there is a 50% chance that their children will carry but will not have cystic fibrosis.


What is the probability of a child having cystic fibrosis if one of her parents was homozygous dominant and the other was a carrier for cystic fibrosis?

Assuming that each parent is a carrier for cystic fibrosis (has the genotype Ff), the probability that their second child will develop cystic fibrosis is one fourth. The probability doesn't change with the number of children they have. For each pregnancy, the chance that the child will have cystic fibrosis (have the genotype ff) is exactly the same.


Why does a person with Cystic Fibrosis have the genotype cc?

Cystic Fibrosis is inherited as a recessive trait. This means that both parents have to carry the allele for the defect. Both parents are Cc which means that 25% of their children will be CC (homozyous dominant and will not be able to pass the recessive allele in subsequent generations, 50% will be Cc(carriers) and 25% will be cc (homozygous reccessive and have Cystic Fibrosis).


How do you got cystic fibrosis?

Cystic Fibrosis is a genetic disorder, 2 parents have a CF gene, if their offspring inherits that trait they will have Cystic Fibrosis.


Is cystic fibrosis caused by a pathogen?

No, cystic fibrosis is a genetic condition. Both parents carry the gene.


What must be true of a person with cystic fibrosis?

Both parents had at least one allele for cystic fibrosis.


A husband and wife have a son with cystic fibrosis Their second child a daughter does not Prepare a pedigree for this family?

To have cystic fibrosis both parents have to be a carrier. Each parent passes on one of their genes to their children; they each have one healthy and one cystic fibrosis gene. The child with cystic fibrosis receives a cystic fibrosis gene from each parent. The other child has at least one healthy gene if she does not have cystic fibrosis, though she could be a carrier. hope it would help


Should there be more careful monitoring of children's work by parents and teachers?

Yes. Parents should be mindful of what's happening to their children even with school works. They have to work hand in hand with the children's teachers so as to give proper guidance to their children. The most successful children are always those who have parents that give their time to them.


Do you take your children to court with you for child support case?

No, you should not take children to a child support court hearing. This is for the parents to deal with and the children should not even know it is happening.