which piece of evidence does not support the theory of recent (ca. 200,000 years ago) african origin of humans? a. mitochondrial dna sequences coalesce to africa populations about 125,000 years ago. b. linkage disequilibrium of nuclear genes gets progressively lower as one measures populations farther from africa. c. haplotype diversity of nuclear genes is greatest in africa d. fossils of modern humans older than 60,000 years are found only in africa. e. non-african populations show reduced heterozygosity compared to african populations.