Does anyone know how to answer to these questions? PLEASE I NEED HELP ASAP. This is for biology.

3. What evidence is there that muscle cells don’t show as much wear and tear?

4. What are some reasons why the gene resulting from a CRISPR-Cas9 insertion would not be passed along to a future generation?

Answer No 3: Recent studies and researches have shown that the muscle cells do not actually wear and tear during heavy exercises. What happens is that micro tears are formed in the muscle fibers as a result of heavy exercise. These micro tears  cause the muscle cells to rebuild themselves.

Answer No 4: One of the biggest reasons that the insertions done by CRISPR-Cas9 insertion would not pass to future generations is because the specialized cells are being modified in this system. As the specialized cells do not have the tendency to for all cells of the body hence, the insertion made by CRISPR-Cas9 will most likely not be transferred to the future generation.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.