Answer:
"If dark-colored rock pocket mice had a competitive advantage of 0.1%, it would take longer for 95% of the population to have dark fur." the statement is true
Explanation:
The greater effect of the crossing over is basically to spread the variation through the population. This is the basic difference even between sexual and non sexual mode of reproduction.The offspring produced might get get more variety when compared to the parent. From this the genetic recombination happens. This also often lead to the intrachromosomal mixing that takes place between the alleles and the homologous pair. This is the exchange of the chromosome segments among the non sister chromatids in meiosis.