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.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.

idk

explanation: