The disease cystic fibrosis is caused by the recessiveallele n. a) what perdenta

Question

The disease cystic fibrosis is caused by the recessiveallele n. a) what perdentage of the children of a couple genotypes NNand Nn will probably have cystic fibrosis? exlain b) What are the phenotype and genotype ratios for theoffspring of 2 people who both have the genotype Nn? Thanks so much for your help The disease cystic fibrosis is caused by the recessiveallele n. a) what perdentage of the children of a couple genotypes NNand Nn will probably have cystic fibrosis? exlain b) What are the phenotype and genotype ratios for theoffspring of 2 people who both have the genotype Nn? Thanks so much for your help

Explanation / Answer

A) no chance at all because the genotype of cystic fibrosis is nn.And since only one of the parents have one n in their genotype, thechild can be a carrier, but has no chance of having thedisease. B) phenotype is 75% chance that the children wont get the disease.and 25% chance they will. genotype:25% chance that it'll be NN, 50% chance that it'll be Nn,and 25% chance that it;ll be nn. Hope this helps you, I asked someone who knows alot aboutgenetics to double check my response. if you don't understand whati wrote, then write back to me and ask for clarification.

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