What does it mean to say that a gene is expressed?

1. Lens cells make crystallin protein.
2. DNA contains the information needed to make a protein.
3. A protein is used to make DNA.
4. Information in DNA is used to make a protein.

Respuesta :

Answer:

4. Information in DNA is used to make a protein.

Explanation:

DNA is the biomolecule that stores genetic information. The nucleotide sequence of the DNA template strand specifies the nucleotide sequence of the mRNA during the process of transcription. The mRNA then enters the process of protein synthesis during which its nucleotide sequence codes for the amino acid sequence of the protein. These events together allow the expression of genes. Therefore, gene expression requires transcription of the nucleotide sequence of DNA into the mRNA and then the use of the mRNA as a template for the synthesis of corresponding proteins.