A. Zero
B. ¼
C. ½
D. ¾
E. None of above
Check Answer
The correct answer is B) ¼.
When parents who are both heterozygous normal for a certain genetic disorder have a child, each child has a 25% chance of inheriting both normal copies of the gene, a 50% chance of inheriting one normal copy and one abnormal copy, and a 25% chance of inheriting both abnormal copies of the gene. In case of type 1 diabetes which is a multifactorial genetic disorder, if both parents are heterozygous for the genes associated with the disorder, then the child has a 25% chance of inheriting both the normal alleles, 50% chance of inheriting one normal allele and one abnormal allele and 25% chance of inheriting both the abnormal alleles.
The combination of two normal alleles doesn’t guarantee the individual will not develop diabetes, however, the combination of normal alleles makes it less likely for the individual to develop diabetes than if they inherit an abnormal allele from both parents.
When parents who are both heterozygous normal for a certain genetic disorder have a child, each child has a 25% chance of inheriting both normal copies of the gene, a 50% chance of inheriting one normal copy and one abnormal copy, and a 25% chance of inheriting both abnormal copies of the gene. In case of type 1 diabetes which is a multifactorial genetic disorder, if both parents are heterozygous for the genes associated with the disorder, then the child has a 25% chance of inheriting both the normal alleles, 50% chance of inheriting one normal allele and one abnormal allele and 25% chance of inheriting both the abnormal alleles.
The combination of two normal alleles doesn’t guarantee the individual will not develop diabetes, however, the combination of normal alleles makes it less likely for the individual to develop diabetes than if they inherit an abnormal allele from both parents.
