Answer:
A) organic material in meteorites
Explanation:
The answer is A) An inner skeleton made of bone or cartilage. Vertebrates have a column of bones that supports the body and protects the spinal cord, while invertebrates are animals that either have a soft body or a hard outer casing covering their body.
For spindle fibers to pull the chromatids towards opposite poles
The RNA determine the instructions for a specific trait in an organism, since the DNA cannot leave the nucleus of the cell the RNA then makes a copy of the dna
