题目选项分析

Though looking less distinctive than many of their highly sought-after purebred counterparts, mixed-breed dogs, born from genetically disparate parents—they usually display various physical characteristics from each parent—often they are healthier and thus increasingly popular.

Though looking less distinctive than many of their highly sought-after purebred counterparts, mixed-breed dogs, born from genetically disparate parents—they usually display various physical characteristics from each parent—often they are healthier and thus increasingly popular.