What are transport proteins and how do they work

Transport proteins move objects and materials into and out of the cell that are either too large, or too polar to cross the membrane on their own. This process is also passive by the way - meaning no ATP is required.

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the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.