Part A The relationship between a gene and a messenger RNA is as follows:
O mRNAs make a copy of genes.
O mRNAs make proteins which then code for genes.
O mRNA is directly responsible for making a double-stranded replicate of the gene.
O Genes are made from mRNAs.
O All genes are made from mRNAs.

well

explanation:

true                                                                                                       true true true true true true

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.