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Which one of the following statements is incorrect?
Quantitative inheritance results in a range of measurable phenotypes for a polygenic trait.
polygenic traits often demonstrate continuous variation.
certain alleles of quantitative trait loci (QTL) have an additive effect on the character/trait.
Alleles governing quantitative traits do not segregate and assort independently.
Answers (1)
Alleles governing quantitative traits can segregate and assort independently.
Quantitative traits, which are complex traits influenced by multiple genes and environmental factors, can indeed segregate and assort independently. However, the inheritance patterns for quantitative traits are more complex compared to simple Mendelian traits.
In quantitative genetics, the contribution of each allele to the phenotype is typically assessed through statistical analyses and heritability estimates. While the inheritance patterns of quantitative traits may involve interactions among multiple genes and environmental factors, the alleles themselves can still segregate and assort independently during sexual reproduction.
Therefore, the statement that alleles governing quantitative traits do not segregate and assort independently is incorrect. Hence, the correct answer is option 4.
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