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What is the probability of producing a normal child by two parents who are carriers for an autosomal recessive disorder?
75%.
Explanation: if both parents are carriers than their Gametes would be Dd x Dd, resulting in DD (1/4), Dd (2/4), and dd(1/4), meaning that there is a 25% chance that they will have a child that has the disorder.
DD = A normal child that lacks the recessive gene, therefore not a carrier
Dd = A normal child that carries the recessive gene
dd = A child with the disorder + carries the gene, hence the child's future offspring will carry it as well.
Source: Self/Basic Punnet Square
What else can I help you with?
Is sickle cell anemia recessive or dominant?
Sickle cell anemia is an autosomal recessive disease. Carriers have sickle cell trait, which confers resistance to malaria.
Is sickle cell an dominant or recessive?
Sickle cell anemia is an autosomal recessive disorder. It can result from two carriers having a child together.
Osteogenesis imperfecta is dominant or recessive?
Osteogenesis imperfecta is typically inherited in an autosomal dominant pattern, meaning one copy of the mutated gene is enough to cause the condition. However, in some cases, it can be inherited in an autosomal recessive pattern if both parents are carriers of the mutated gene.
What mode of inheritance usually skips a generation?
Autosomal recessive inheritance usually skips a generation. This occurs when both parents are carriers of a recessive gene and pass it on to their offspring, who may then express the trait.
What is the probability that each child born to two carriers of a recessive disorder allele will have the disorder?
The child will have the disorder, only if the recessive allele from both the parents is transferred to the child. Therefore, the probability is 1/4.
Is prenatal testing done for Von Willebrand disease?
If one parent has been diagnosed with an autosomal dominant form of VWD or both parents are carriers for an autosomal recessive form of VWD, then prenatal testing can be considered
Who can be carrier of autosomal disorder?
females
Is albinism heterozygous or homozygous?
genetically albinism is an autosomal recessive gene which in fact gives the child a 25% chance of inheriting the gene if both parents are carriers
What is automasal trait?
"Autosomal trait" refers to a genetic trait located on one of the 22 pairs of autosomal chromosomes in humans, rather than the sex chromosomes. These traits are inherited in a Mendelian manner and can be dominant or recessive.
Is alkaptonuria caused by a recessive or dominant allele?
Alkaptonuria is caused by a recessive allele. It is an autosomal recessive disorder, meaning that an individual needs to inherit two copies of the defective gene (one from each parent) in order to have the condition.
Compare the inheritance of Huntingtons disease with the inheritance of sickle cell anemia?
Huntingtons disease is Autosomal dominant, i.e. a 50% chance of inheritance if one parent has the gene. Where as sickle cell anemia is autosomal recessive. This gives a 25% chance of inheritance if both parents are carriers.
Does FAP follow a recessive or dominant inheritance pattern and why?
FAP (familial adenomatous polyposis) follows an autosomal dominant inheritance pattern. This means that individuals with an affected parent have a 50% chance of inheriting the mutated gene that predisposes them to develop multiple adenomatous polyps in the colon. The presence of just one copy of the mutated gene is enough to cause the disorder.
