Complex sentence: Abu el-Haj argued that genetic lineages, like older notions of race, suggest some idea of biological relatedness, but unlike older notions of race they are not directly connected to claims about human behaviour or character.
Split into simpler sentences: Abu el-Haj argued that genetic lineages, like older notions of race, suggest some idea of biological relatedness. But, unlike older notions of race, they are not directly connected to claims about human behaviour or character.