Recent research investigating variation in human height have found that a variety of genes at different loci,as well as early nutrition,especially that of the mother during gestation (the period of time during development of a fetus)and childhood years,influence height.Given this information,which of the following is correct?
A)Phenotypes are directly linked to genotypes and not influenced externally.
B)Phenotypes are usually the result of a combination of genes as influenced by the environment.
C)One phenotypic trait is usually related to one gene.
D)For human height,the environment is more influential than inheritance of particular alleles.

Question

Quizplus · Accepted Answer

The research shows that both genes and early nutrition/environment play a role in determining height, indicating that phenotypes are usually the result of a combination of genes as influenced by the environment. Option A is incorrect because it states that phenotypes are directly linked to genotypes and not influenced externally, which is not supported by the research. Option C is incorrect because it states that one phenotypic trait is usually related to one gene, which is also not supported by the research. Option D is incorrect because it states that the environment is more influential than inheritance of particular alleles, which is not what the research suggests.

Recent Research Investigating Variation in Human Height Have Found That