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.
Question
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.
Solution
The statement is not entirely correct. In recessive inheritance, a person must inherit two copies of the faulty gene (one from each parent) to be affected by the disorder. If a person only has one copy of the faulty gene and one normal gene, they are indeed a carrier, but they are not affected by the disorder. This is because the normal gene can compensate for the faulty one.
Here are the steps of how recessive inheritance works:
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Each person has two copies of most genes - one from each parent. These genes may be normal or faulty.
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If a person inherits a normal gene and a faulty gene, they are a carrier of the disorder but are not affected by it. The normal gene compensates for the faulty one.
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If a person inherits two faulty genes (one from each parent), they will have the disorder. This is because there is no normal gene to compensate for the faulty ones.
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If a person inherits two normal genes, they will not have the disorder and will not be a carrier.
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Carriers can pass the faulty gene to their children. If both parents are carriers, there is a 25% chance their child will inherit the disorder (by getting a faulty gene from each parent), a 50% chance the child will be a carrier (by getting one normal gene and one faulty gene), and a 25% chance the child will neither have the disorder nor be a carrier (by getting two normal genes).
Similar Questions
is this statement correct To inherit the disease, the child only needs 1 copy of the defective to show disease symptoms, which would be 50%. If only one parent contains a single copy (heterozygous) of a dominantly inherited disorder and the other parent is homozygous recessive, what percentage of offspring will have the disorder
Question textIf an individual has only one recessive gene for an autosomal recessive disorder they will not be affected by the condition.
If a child is born with a genetic disorder when neither of his biological parents have that disorder, the trait is likely to be caused by: a recessive allele on an autosome a gene on the X chromosome a dominant allele on the autosome a gene on the Y chromosome
Presence of the phenotype of an autosomal recessive disorder in one generation and then absence of the phenotype in the next generation likely meansMultiple choice question.the allele is present in heterozygotes that are carrying the disorder.the disorder has mutated into another form.the allele has not been passed to the next generation.the disorder has ceased to exist in the family.
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
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