If both parents have the gene, the chances are 25% of having a child with Cystic Fibrosis. The male and females x genes are affected by it and only half of it. So when the parents mate and they are going to have a baby, the chances are 25%
inductive reasoning
Inductive reasoning is used to seek strong evidence for the truth of the conclusion. Looking at different pictures side by side then trying to figure out the pattern is inductive reasoning.
The use of a specific observation to reach a general conclusion. (APEX)
Inheritance - Autosomal recessive, requires mutations on both alleles - A single gene on chromosome 7, which encodes for the cystic fibrosis transmembrane conductance regulator - There are over 1000 different mutations for this gene - The most common is Delta F508, which makes up 67% of all mutations in the Caucasian population - Caucasians most effected
Gregor Johann Mendel is credited with discovering the pattern of genetic inheritance
Types of dominance, multiple alleles, sex linked inheritance, polygenic inheritance and maternal inheritance.
Cystic fibrosis is an autosomal recessive disorder caused by mutations in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. Heterozygous carriers (those who have inherited only one copy of the altered gene) are asymptomatic (do not experience symptoms). Two of these altered genes must be present for CF to appear. This means that if both parents are CF carriers, their offspring will express CF symptoms only if the child inherits one defective copy of the CFTR gene from each parent.
pedigree
Pedigree
Polygenic inheritance
Multiple gene inheritance. Sree
Polygenic trait