What makes the geocentric impossible ? a: the moon revolves around earth b: earth gravitational force is much less than the sun c: orbits are elliptical, not circular d: there are other planets that are closer to the sun

b is dominant over the allele for the white fur.

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.