Non Mendelian Inheritance Quiz

What is incomplete dominance?

• Genetic situation in which one allele is recessive to another allele

• Genetic situation in which one allele does not completely dominate another allele

• Genetic situation in which both alleles are completely dominant

• Genetic situation in which alleles have no effect on each other

Explain the concept of codominance.

• One allele is completely dominant over the other, resulting in only one trait being expressed

• Codominance occurs when both alleles are recessive, resulting in no dominant trait being expressed

• Codominance is when one allele is partially dominant over the other, resulting in a blend of the two traits

• Both alleles in a heterozygous individual are fully expressed, resulting in a phenotype that shows both traits equally.

What is epistasis and how does it differ from dominance?

• Epistasis is the presence of multiple alleles for a single gene, while dominance is the presence of only two alleles

• Epistasis is the interaction between genes and the environment, while dominance is the interaction between alleles

• Epistasis is the interaction between different genes where the effect of one gene is dependent on the presence of one or more 'modifier' genes.

• Epistasis is the same as dominance and has no difference

State the law of dominance in genetics.

• In a heterozygous pair of alleles, one allele will be dominant and the other recessive, and only the dominant allele will be expressed in the phenotype.

• In a heterozygous pair of alleles, the dominant allele will be hidden and not expressed in the phenotype.

• In a heterozygous pair of alleles, both alleles will be expressed equally in the phenotype.

• In a heterozygous pair of alleles, the recessive allele will be dominant over the other allele.

Give an example of a polygenic trait and explain how it is inherited.

• Blood type inherited from a single gene

• Hair color inherited from the environment

• Height or skin color

• Eye color inherited from only one parent

In incomplete dominance, what is the phenotype of the heterozygous individual?

• Phenotype of one of the homozygous individuals

• Completely different phenotype

• No phenotype

• Blend of the two homozygous phenotypes

Explain the difference between polygenic traits and single gene traits.

• Polygenic traits are controlled by multiple genes, while single gene traits are controlled by a single gene.

• Polygenic traits are always recessive, while single gene traits are always dominant.

• Polygenic traits are only found in plants, while single gene traits are only found in animals.

• Polygenic traits are controlled by environmental factors, while single gene traits are controlled by genetic factors.

What are the implications of non-Mendelian inheritance in genetic studies?

• Non-Mendelian inheritance has no impact on genetic studies

• Non-Mendelian inheritance simplifies genetic studies

• Non-Mendelian inheritance is not important

• Non-Mendelian inheritance does not follow traditional laws of dominance

A black chicken and a white chicken mate and produce a grey chicken. Which type of inheritance would this be an example of?

• co-dominance

• incomplete dominance

• complete dominance

• law of multiple alleles

Birds can be blue, white, or white with blue-tipped feathers. (a)  

• incomplete dominance
• codominance