For the 3' → 5' template strand, replication occurs readily as the DNA polymerase follows the replication fork, assembling a 5' → 3' complementary strand. This complementary strand is called the leading strand

gold i'm pretty sure i might be wrong

a symbiotic relationship with the mitochondria

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.