The Guardian (updates/news) ...
http://www.guardian.co.uk/science/genetics
Activity B1.2.1
http://www.ncbe.reading.ac.uk/
Activity B1.2.2
http://www.heraldsun.com.au/news/world/nature-experiment-for-twins/story-e6frf7lf-1111114793928
Activity B1.4.3
www.guardian.co.uk/sport/2009/aug/19/caster-semenya-800m-world-athletics-championships-gender
Activity B1.7.1
http://www.rcog.org.uk/womens-health/clinical-guidance/amniocentesis-what-you-need-know#risk
Activity B1.7.3
www.guardian.co.uk/science/genetics and http://www.guardian.co.uk/world/ethics
Lesson B1.10.2
www.hfea.gov.uk