Which of the following statements is TRUE?
A) Epigenetics refers to small changes to the DNA sequence.
B) The human genetic code is organized on to 23 pairs of chromosomes.
C) The expression of genes is fixed from birth.
D) Different cells of the body contain different versions of the genetic code.

Question

Quizplus · Accepted Answer

The human genetic code is organized onto 23 pairs of chromosomes. Statement A is false as epigenetic changes refer to modifications to the DNA that do not change the actual sequence of the DNA. Statement C is false as gene expression can be influenced by environmental factors and can change throughout an individual's life. Statement D is false as all cells in an individual's body contain the same genetic code, although different genes may be expressed in different cells due to epigenetic modifications.

Which of the Following Statements Is TRUE