The probability of the unaffected child from cystic fibrosis, having a heterozygous allele is 1/2.
It is known to us clearly that cystic fibrosis is a genetically transferred disease. This disease gets inherited if the affected person has a recessive allele.
In the given case, neither of the parents is affected by cystic fibrosis. This means that the parents of the children are with heterozygous alleles corresponding to cystic fibrosis.
However, this heterozygous allele when inherited may have a chance of transferring the recessive alleles to the offspring.
At the same time, the probability of the inheritance of a heterozygous allele is also possible.
Therefore, the probability of the unaffected child getting a heterozygous allele is 1/2 as both parents are responsible to inherit the heterozygous allele to the unaffected child.
To know more about genetic disorders, click below:
https://brainly.com/question/1100281
#SPJ4
