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Questions and Answers
Which of the following best defines a multifactorial trait?
Which of the following best defines a multifactorial trait?
- A trait resulting from a single gene with two alleles
- A trait resulting solely from the additive effects of two or more genes
- A trait resulting solely from environmental factors
- A trait resulting from the combined effect of environmental factors and the additive effects of two or more genes (correct)
What is the main assumption of the polygenic theory?
What is the main assumption of the polygenic theory?
- The frequency of each allele is 1.00, ensuring complete dominance
- Mating is non-random and there is complete dominance, leading to distinct phenotypes
- The character has a mean value of 50 units, reflecting a balanced genetic contribution
- Mating is random and there is no dominance, allowing for the existence of intermediate forms (correct)
Which of the following is an example of a multifactorial trait?
Which of the following is an example of a multifactorial trait?
- Attached earlobes
- Blood pressure (correct)
- Huntington's disease
- Eye color
What is a polygenic trait?
What is a polygenic trait?
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What distinguishes multifactorial traits from simple Mendelian inheritance?
What distinguishes multifactorial traits from simple Mendelian inheritance?
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