Answer: The correct options in the blanks are DNA, mRNA, Protein, mRNA, and DNA respectively.
What is gene expression?
It is the process by which cells produce protein from DNA molecules. DNA produces RNA which contains codes to produce amino acids.
The mRNA enters the ribosome which produced protein using the codons of mRNA.
Retroviruses have special machinery to produce the DNA from mRNA.
Therefore, the correct options in the blanks are DNA, mRNA, Protein, mRNA, and DNA respectively.
Learn more about Retroviruses:
brainly.com/question/10069048
Explanation: Please mark as brainliest!
