Galactosemia is a metabolic condition, caused by a recessive allele, which prevents affected patients from breaking down certain sugars. In infants galactosemia can lead to a toxic build-up of the by- product galactol, but negative effects can be minimized if the condition is identified early and the child is kept on a diet free from lactose or galactose. John and Maggie both know they are carriers of the galactosemia allele. They have just been married and hope to start a large family. If they have four children, what is the chance that none of them will be affected by the disease? (4 points)

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Q: Phenylketonuria (PKU) is an autosomal recessive disease that results from a defect in an enzyme that…

A: Phenylketonuria is an inborn error of metabolism which happened due to decreased or low metabolism…

Q: What phenotype is expressed from the genetic trait hemophilia?

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Q: Kate and her husband are both heterozygous for galactosemia gene. If Kate and her husband have four…

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Q: Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood…

A: HbA encodes normal phenotype. This allele is dominant over HbS allele.

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A: A )    Hemoglobin Wayne is an alpha chain variation which shows itself as two minor hemoglobin (Hb)…

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Q: evidence suggests that spherocytosis is incompletely penetrant?

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Q: hich of the following best explains how individuals who inherit phenylketonuria alleles can avoid…

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A: The correct answer is option C.

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Q: This pedigree traces the inheritance of a rare disease in humans. a. Based on this pedigree, is the…

A: Answer is given below.

Q: Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood…

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Q: Phenylketonuria (PKU) is caused by the absence of the enzyme phenylalanine hydroxylase, which…

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Q: show effects of the allele under some circumstances (refer to the linked article and Mendelian…

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Q: Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood…

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Q: case of the human blood type, the gene that produces the enzyme responsible for attaching the A…

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Q: Phenylketonuria is one of the most common recessive genetic disorders in humans. Infants with PKU…

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.