Question textAn autosomal recessive condition is inherited if:Select one:a. both parents are carriersb. the mother passes on the gene and the baby is a boyc. both parents pass on the gene for the conditiond. the mother is a carrier for the condition
Question
Question textAn autosomal recessive condition is inherited if:Select one:a. both parents are carriersb. the mother passes on the gene and the baby is a boyc. both parents pass on the gene for the conditiond. the mother is a carrier for the condition
Solution
An autosomal recessive condition is inherited if both parents pass on the gene for the condition. This means option c is the correct answer.
Here's why:
Autosomal recessive inheritance means two copies of an abnormal gene must be present in order for the disease or trait to develop. A person usually must receive one copy of the abnormal gene from each parent to develop the disease. If both parents are carriers (they have one abnormal gene but do not have the disease), there is a 25% chance with each pregnancy for them to have a child with the disease.
So, while option a (both parents are carriers) can lead to the child having the disease, it's not guaranteed - it's a 25% chance. The only way the disease is guaranteed to be inherited is if both parents pass on the abnormal gene, as stated in option c.
Options b and d are incorrect because they suggest that the disease can be passed on from only one parent, which is not the case with autosomal recessive conditions.
Similar Questions
An autosomal recessive condition is inherited if:Select one:a. both parents are carriersb. the mother passes on the gene and the baby is a boyc. both parents pass on the gene for the conditiond. the mother is a carrier for the condition
Question textIf an individual has only one recessive gene for an autosomal recessive disorder they will not be affected by the condition.
Question textIf a disorder is passed on through recessive inheritance, the person will have a gene pair in which one copy is faulty and the other is working properly and so will be a carrier of the faulty gene who is unaffected by the disorder.
A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele? Group of answer choicesThe allele is on the X chromosome.The baby inherits the dominant allele from his father.The allele is on an autosomal chromosome and the baby is a twin.The allele is on the Y chromosome.
Select all of the following that describe the inheritance of an autosomal dominant disorder.Multiple select question.expressed in homozygous recessive individuals but not in heterozygous individualstypically present in every generationNOT typically present in every generationexpressed in homozygous dominant individuals and heterozygous individuals
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