You can see the introduction to this series here. In this post we examine the evidence that mitochondria and chloroplasts are the descendants of free-living bacteria that entered into mutualistic relationships with eukaryotic host cells.
For the town of the same name in New South Wales, Australia, see Seaham, New South Wales. Seaham, formerly Seaham Harbour, is a small town in County Durham, situated 6 miles (9.7 km) south of Sunderland and 13 miles (21 km) east of Durham. It has a small parish church, St Mary the Virgin, with a late 7th century Anglo Saxon nave resembling the church at Escomb in many respects.
Threekingham (sometimes Threckingham) is a village in the North Kesteven district of Lincolnshire, England. It is situated on the A52 Grantham to Boston road, 6 miles (10 km) south from Sleaford, and close to the A15 Threekingham Bar roundabout.Mareham Lane, the Roman Road aligned with King Street, crosses the A15 at Threekingham.he Medieval Stow Fair was held nearby, less than 1 mile (1.6 km) to the south. It is possible that it was the site of the early medieval nunnery founded in the late 7th century by Saint Werburh, dedicated to Saint Ãthelthryth, Ã¦thelthryth and probably destroyed by The danes. c. 870