Which of the following statements BEST explains the nature of genetic expression?
A) A single gene is the source of a single protein's genetic information.
B) Events outside of a cell cannot excite or inhibit genetic expression.
C) Only internal events inside a cell can influence genetic expression.
D) The activity of genes is affected by the internal and external factors.

Question

Quizplus · Accepted Answer

Genetic expression is influenced by both internal and external factors. Internal factors include DNA methylation, histone modification, and gene regulation by transcription factors, while external factors include environmental factors such as temperature, light, and nutrition. Therefore, the activity of genes is affected by both internal and external factors. Option A is incorrect because a single gene can produce multiple proteins through alternative splicing. Option B is incorrect because external factors can certainly affect gene expression. Option C is also incorrect because external factors can affect gene expression.

Which of the Following Statements BEST Explains the Nature of Genetic