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Chapter 7: Problem 4

Do all genes that contribute to a polygenic trait do so to the same degree?

Short Answer

Expert verified
No, all genes that contribute to a polygenic trait do not contribute to the same degree; the effect varies from gene to gene.

Step by step solution

01

Understand Polygenic Traits

Polygenic traits are characteristics that are influenced by more than one gene pair and typically display a continuous distribution. These traits can be influenced by numerous genes, each making a small contribution to the overall phenotype.
02

Assessing Contribution of Each Gene

Each gene contributing to a polygenic trait may not have equal contributions. Some genes might have a larger effect, while others might have a smaller, marginal influence. This depends on a variety of factors, including the specific trait in question, the environment, and the gene's function and location.
03

Conclusion

Therefore, not all genes that contribute to a polygenic trait do so to the same degree. The degree of contribution varies from gene to gene, making every individual unique.

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