IMAT 2012 - Q49 - Bio - Non-identical Twins - Worked Solution

This is a video solution to question 49 of the IMAT 2012. These questions are useful practice for students applying for Medicine or Biomedical Sciences at Cambridge, Oxford, and other Russell Group universities. For further help with extension and Oxbridge-level admissions test and interview questions, go to https://stepmaths.co.uk