Which of the following best describes what happens in genetic therapy? Question 19 options:

The DNA sequence of the gene is edited using a guide DNA and Cas9. The DNA can be cut and deleted or new DNA can be inserted.

DNA is inserted into a virus and then put into a person. The virus "infects" the patient with the "good" DNA.

Healthy proteins are inserted into a patient since their DNA does not produce the right proteins.

Healthy proteins are inserted into a patient since their DNA does not produce the right proteins.

Explanation:

The DNA sequence of the gene is edited using a guide DNA and Cas9. The DNA can be cut and deleted or new DNA can be inserted.

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.