Which statement or condition best reflects multifactorial inheritance?
A)A mutation in a single gene results in the expression of problems in a variety of tissues and organs.
B)The susceptibility to a problem is an inherited trait, but development of the problem is related to environmental conditions.
C)A mutated gene is inherited, but the results of expression of that gene are not evident until middle or late adulthood.
D)Several genes are responsible for the mechanism of hearing, and a mutation in any one of them results in hearing impairment.

Question

Quizplus · Accepted Answer

Multifactorial disease results from the actions of several genes working together (polygenic) or the combined influences of genes (sometimes even single genes) and environment. Often, multifactorial traits and disorders are not dominant or recessive. Each gene variant adds to or takes away from the actual expression of the trait (phenotype). Sometimes the contributions of a particular gene variant are large, and sometimes they are small. The expression of the gene or genes is strongly affected by the environment.

Which Statement or Condition Best Reflects Multifactorial Inheritance