The Way Genes are Expressed-In the Phenotype-Is Influenced by Which

Question

The way genes are expressed-in the phenotype-is influenced by which of the following?
A) the genes of the parents
B) the local environment
C) the age of the organism
D) the culture

Accepted Answer

The local environment can affect how genes are expressed in the phenotype. For example, a plant may have genes for tall growth, but if it doesn't receive enough sunlight or nutrients, it may not grow as tall as it could. Similarly, a person may have genes for a certain eye color, but if they are exposed to certain chemicals or UV radiation, their eye color may change or appear differently. Genes of the parents (A) are inherited and determine the genetic makeup of an organism, but how those genes are expressed can be influenced by the environment. Age of the organism (C) can also affect gene expression, as certain genes may turn on or off as an organism develops or ages. Culture (D) can influence behavior and lifestyle choices, but it is unlikely to directly affect gene expression in the phenotype.