Answer: Hi!
The answer to this question will be D, "knowledge of the entire investigation carried out by the original group of scientists". A group of scientists need to know exactly what went on before in the experiment so they can replicate it without making any mistakes. If they do something different than the first group, it's not a valid replication, because their results will be different.
Hope this helps!
DNA is used for replication in cells, the replication is called Semi conservative. Tis is when two strand of DNA are used as a code for a new DNA molecule.
The answer is B. Because RNA is copied as the compliment to DNA, except uracil replaces thymine
2) cell-tissue-organ-organ system
Starting with the retention of light by chlorophyll, the light responses change over light vitality into concoction vitality as ATP and NADPH. The ATP gives the vitality, and the NADPH supplies the electrons for the Calvin cycle, which changes over carbon dioxide to sugar.
