True or False: In humans, skin color and weight are partly determined by multiple alleles.

Analysis of the Statement

1. Definition of Multiple Alleles: Multiple alleles refer to the presence of more than two possible alleles at a given locus in a population. In humans, several traits, including skin color and possibly weight, are influenced by multiple alleles.

2. Skin Color: Human skin color is a polygenic trait, meaning it is influenced by multiple genes, each of which can have different alleles. The variation in skin color is due to several genes, including those that influence the production of melanin.

3. Weight: Weight in humans is also influenced by multiple genetic factors, including the alleles responsible for fat metabolism, growth factors, and other traits influencing body composition. While it may not strictly be classified as being determined by "multiple alleles" in the conventional sense, the contributions of various alleles to relevant genes make it a complex trait.

Conclusion

The statement is True. Both skin color and weight in humans are influenced by multiple alleles, indicating the involvement of various genes and their respective alleles in determining these traits.