Many scientific explanations for the origin of DNA and life have been proposed over the years. These hypotheses explain how inorganic molecules became organic monomers, such as amino acids, sugars, phosphates, and bases.
But this still didn't explain where living things came from. If macromolecules were able to form on early Earth, this still
leaves us with the question of how the polymers would have become self-replicating, a basic criteria for life. There
are several ideas but little certainty. Some of the common ideas include: the RNA world hypothesis, the "genes first"
hypothesis, and the "metabolism first hypothesis.

B. The bacteria would be relatively evenly distributed along the algal filaments.

Explanation:

A) There would be no difference in results.

B) The bacteria would be relatively evenly distributed along the algal filaments.

C) The number of bacteria present would decrease due to an increase in the carbon dioxide concentration.

D) The number of bacteria present would increase due to an increase in the carbon dioxide concentration.

E) The number of bacteria would decrease due to a decrease in the temperature of the water.

When different segments of light was used, largest groups of aerobic bacteria were found in the red and blue regions of light because these regions have been reported to be best efficient for photosynthesis and thus, oxygen production.

If the experiment is repeated without separating the light segment, one would expect a somehow uniform distribution of aerobic bacteria growth along the algal segment since the different light segments in white light are uniformed distributed.

The correct option is B.