Genetics Tracking Human Ancestry: The Y-chromosome and mitochondrial DNA by David Warmflash, MD, Nathan H Lents, Ph.D. Reading Quiz Teach with this 1. Only females can trace their mitochondrial DNA (mtDNA) lineage back through their foremothers. false true 2. Genetic sequences that we inherit from only parent are called _____. haplotypes autosomal genes genome DNA 3. When scientists create a family tree and identify the MRCA, they are speaking about the _____. Most Reputed Common Ancestor Minimally Related Common Ancestor Most Recent Common Ancestor Minimally Random Common Ancestor 4. The Jewish priesthood (Kohanim) provides a lesson on the utility of haplotypes in population research because: It demonstrates the phenomenon of pedigree collapse. Since William Sanchez was a priest made it more likely that would carry a Jewish Y-chromosome haplotype. It identifies people who are at particular risk for diseases that typically affect Jewish people. It is passed down from father to son and therefore identifies men who share Y-chromosome sequences. 5. Mitochondria have some of their own DNA because They come from your mother. They likely evolved from autonomous bacterial cells. They are organelles. They are found within cells. 6. The mtDNA haplotypes can be linked to a last common mitochondrial ancestor, sometimes called the mitochondrial Eve. true false 7. Research on _____ reveals gene flow, interbreeding between Neanderthals and modern humans. bacteria haplotypes mtDNA Y-chromosomes 8. _____is when distant relatives mate with each other creating a family tree in which an ancestor will appear in multiple places. pedigree collapse pedigree increase descendent collapse descendent increase Score Quiz
