Question

which of these is true about dna, proteins, and the expression of genetic traits? (1 point)
genes in dna code for the production of proteins, which cause traits to be expressed.
enzymes break down dna, releasing amino acids that join to form proteins and express various traits.
dna is mutated by a chemical passed from parents to offspring to form proteins that express traits.
proteins bind to dna, which activates them and forces them to express certain traits.

Explanation:

• Option 1: DNA contains genes. Through transcription and translation, genes code for proteins. Proteins play crucial roles in the expression of genetic traits (e.g., enzymes are proteins that catalyze biochemical reactions which are part of trait - related processes).
• Option 2: Enzymes do not break down DNA to release amino acids for protein synthesis. DNA is transcribed to mRNA, and mRNA is translated using amino acids (which are obtained from the diet or amino - acid synthesis pathways in the body) to form proteins.
• Option 3: DNA is not mutated by a chemical passed from parents to offspring in the way described for normal protein - coding and trait - expression. Mutations are rare, random changes (not a normal mechanism for protein formation from parental chemicals in this simplistic sense).
• Option 4: Proteins do not bind to DNA in a way that "forces" DNA to express traits. Instead, DNA sequence (genes) determines the proteins that are made, and proteins then contribute to trait expression.

Answer:

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