Which of the following is needed in order to direct CRISPR-Cas9 to cut the specific area of the genome you are trying to manipulate? a. a specific palindromic sequence in the targeted area of the genome
b. multiple restriction sites in the targeted area of the genome
c. an sgRNA molecule designed to be complementary to the targeted area of the genome
d. DNA ligase
e. ALL OF THESE

blah

explanation:

bc blah

the answer is c because it is most logical.

the earth is thought to have been formed about 4.6 billion years ago by collisions from a cloud of hydrogen, helium, rock, ice and other materials. these were pulled together by gravity to form objects in and around earth like- asteroids and small early planets called planetesimals.

so, the best possible answer to this question will be option d- to harden materials to form different parts of earth’s layers