Which of these is true about DNA, proteins, and the expression of genetic traits? A. Enzymes break down DNA, releasing amino acids that join to form proteins and express various traits. B. DNA is mutated by a chemical passed from parents to offspring to form proteins that express traits. C. Genes in DNA code for the production of proteins, which cause traits to be expressed. D. Proteins bind to DNA, which activates them and forces them to express certain traits.

C. Genes in DNA code for the production of proteins, which cause traits to be expressed.

Explanation:

A. Enzymes break down DNA, releasing amino acids that join to form proteins and express various traits. - this is false. DNA is not made up of amino acids, it is made up of nucleotides.

B. DNA is mutated by a chemical passed from parents to offspring to form proteins that express traits. - this is false. DNA itself is passed from parents to offspring. The DNA is transcribed into mRNA which is translated into proteins that express traits.

C. Genes in DNA code for the production of proteins, which cause traits to be expressed. - this is true. Genes are sections of DNA that encode for specific proteins. The structure and activity of these proteins determines all the functions in the cell and the body, and therefore specify all our traits.

D. Proteins bind to DNA, which activates them and forces them to express certain traits. - this is false. While proteins bind to DNA, this is not what causes them to become active and carry out their function to specify traits.