If humans had only one gene for eye color with two alleles (B and b) and it was expressed as complete dominance, how many different colors of eye would be possible from the choices below?

2 phenotypes: Brown eyes and Blue eyes
3 phenotypes: Dark brown eyes, medium brown eyes and light brown eyes
3 phenotypes: Dark brown eyes, eyes with brown and blue areas and blue eyes
There would be a large range of phenotypes: shades of brown, hazel greens and blue

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.