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Questions and Answers
Which genetic disease is inherited as a dominant allele in humans?
Which genetic disease is inherited as a dominant allele in humans?
- Phenylketonuria
- Huntington’s disease (correct)
- Sickle cell anemia
- Cystic fibrosis
What is the frequency of Marfan syndrome, caused by a dominant allele, in humans?
What is the frequency of Marfan syndrome, caused by a dominant allele, in humans?
- 1/8,000
- 1/3,500
- 1/10,000 (correct)
- 1/500
Which disease exhibits a dominant pattern of inheritance in pedigrees?
Which disease exhibits a dominant pattern of inheritance in pedigrees?
- Tay-Sachs disease
- Familial hypercholesterolemia (correct)
- Phenylketonuria
- Cystic fibrosis
What are the characteristics of autosomal recessive inheritance?
What are the characteristics of autosomal recessive inheritance?
How can dominant traits be recognized in pedigrees?
How can dominant traits be recognized in pedigrees?
What dominance relationship is defined when the phenotype of the heterozygote resembles one of the two parents?
What dominance relationship is defined when the phenotype of the heterozygote resembles one of the two parents?
What does the R allele encode?
What does the R allele encode?
What is the result of the r allele not making Sbe1?
What is the result of the r allele not making Sbe1?
Which gene encodes the Stay green enzyme (Sgr)?
Which gene encodes the Stay green enzyme (Sgr)?
What happens when the y allele does not make Sgr?
What happens when the y allele does not make Sgr?
According to the molecular principles, what does a recessive allele usually not encode?
According to the molecular principles, what does a recessive allele usually not encode?
What is the effect of the absence of Sbe1 due to the r allele?
What is the effect of the absence of Sbe1 due to the r allele?
Which allele usually determines a normally functioning protein according to the molecular principles?
Which allele usually determines a normally functioning protein according to the molecular principles?
What is the function of Sgr encoded by the Y allele?
What is the function of Sgr encoded by the Y allele?
What is the result of chlorophyll not being broken down due to the y allele?
What is the result of chlorophyll not being broken down due to the y allele?
What is the effect of a recessive allele on a protein's activity according to the molecular principles?
What is the effect of a recessive allele on a protein's activity according to the molecular principles?
In incomplete dominance, what is the phenotypic ratio when crossing two heterozygous individuals?
In incomplete dominance, what is the phenotypic ratio when crossing two heterozygous individuals?
What type of dominance relationship results in F1 hybrids displaying traits of both parents?
What type of dominance relationship results in F1 hybrids displaying traits of both parents?
Which allele controls the type of sugar polymer on the surface of red blood cells in codominance?
Which allele controls the type of sugar polymer on the surface of red blood cells in codominance?
What does variation in dominance relations between alleles depend on?
What does variation in dominance relations between alleles depend on?
What molecular explanation is provided for incomplete dominance in snapdragon flower color?
What molecular explanation is provided for incomplete dominance in snapdragon flower color?
What is the phenotype ratio when crossing two heterozygous individuals in complete dominance?
What is the phenotype ratio when crossing two heterozygous individuals in complete dominance?
Which type of dominance relationship does not affect the transmission of alleles?
Which type of dominance relationship does not affect the transmission of alleles?
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