Non-Mendelian Inheritance
Biology ⇒ Genetics and Heredity
Non-Mendelian Inheritance starts at 10 and continues till grade 12.
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See sample questions for grade 10
Describe how environmental factors can influence the expression of polygenic traits, giving an example.
Describe how epistasis can affect the phenotype of an organism.
Describe how mitochondrial DNA is inherited in most animals.
Describe how pleiotropy can affect an organism.
A woman with blood type AB and a man with blood type O have a child. What are the possible blood types of their child? (1) A only (2) B only (3) A or B (4) AB or O
Describe how environmental factors can influence the expression of polygenic traits, giving an example.
Explain why a cross between a red-flowered and a white-flowered snapdragon produces pink flowers in the F1 generation.
Explain why the inheritance of leaf color in some plants is considered cytoplasmic inheritance.
A woman with blood type AB and a man with blood type O have a child. What are the possible blood types of their child? (1) A only (2) B only (3) A or B (4) AB or O
Codominance occurs when: (1) Both alleles are fully expressed in the phenotype (2) One allele is completely dominant over the other (3) Neither allele is expressed (4) The alleles blend together
Which of the following best describes epistasis? (1) One gene masks the effect of another gene (2) Both alleles are expressed equally (3) The phenotype is a blend of two alleles (4) Genes are located on the same chromosome
Which of the following is a characteristic of polygenic inheritance? (1) Discrete phenotypes (2) Continuous variation (3) Only two possible phenotypes (4) Traits controlled by one gene
Fill in the blank: In codominance, both alleles in a heterozygote are __________ expressed.
Fill in the blank: The human blood type AB is an example of __________.
Fill in the blank: The inheritance of traits controlled by genes located in the mitochondria is called __________ inheritance.
Fill in the blank: The inheritance of traits determined by genes located outside the nucleus is called __________ inheritance.
True or False: All non-Mendelian inheritance patterns involve more than two alleles.
True or False: Codominance and incomplete dominance are the same.
True or False: Environmental factors can influence the expression of polygenic traits.
True or False: Epistasis can alter the expected phenotypic ratios in offspring.
