Complex sentence: In India, the major maternal lineages are various M subclades, followed by R and U sublineages, whose coalescence times have been approximated to date to 50,000 BP.
Split into simpler sentences: In India, the major maternal lineages are various M subclades, followed by R and U sublineages. These haplogroups' coalescence times have been approximated to date to 50,000 BP.