Mendelian and Non-Mendelian Genetics Quiz

What is the term used to describe the physical appearance of an organism as a result of its genotype?

• Genotype

• Phenotype

• Allele

• Homozygous

In Mendelian genetics, what term describes a pair of matching alleles, such as AA or aa?

• Heterozygous

• Homozygous

• Dominant

• Recessive

Which of the following is NOT a principle of Mendelian genetics?

• Law of Segregation

• Law of Independent Assortment

• Law of Dominance

• Law of Polygenic Inheritance

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What is the term for a genetic scenario where both alleles contribute to the phenotype, resulting in a blending of traits?

• Codominance

• Incomplete dominance

• Complete dominance

• Multiple alleles

Which of the following best describes codominance?

• Both alleles are expressed equally in the phenotype.

• One allele is completely dominant over the other.

• Traits are blended in the phenotype.

• A single gene affects multiple traits.

What is the term used to describe a gene that is located on the X chromosome?

• Autosome

• Hemizygous

• X-linked

• Y-linked

In a dihybrid cross, what is the phenotypic ratio expected in the offspring if both parents are heterozygous for both traits (assuming complete dominance)?

• 9:3:3:1

• 3:1

• 1:2:1

• 1:1:1:1

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What does the term "polygenic inheritance" refer to?

• A single gene affecting multiple traits.

• Multiple genes influencing a single trait.

• A trait controlled by two alleles.

• A trait not influenced by genes.

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Which of the following is an example of a trait that follows Mendelian inheritance patterns?

• Skin color

• Blood type

• Height

• Pea plant flower color

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What is the expected genotypic ratio for a monohybrid cross between two heterozygous individuals (Aa x Aa)?

• 1:2:1

• 3:1

• 9:3:3:1

• 1:1

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