- Boys or girls don't "run in families." Study finds no genetic contribution to variation in human offspring sex ratio, in a total population study of 4.7 million births https://royalsocietypublishing.org/doi/10.1098/rspb.2019.2849 3 comments science
- Research suggests having multiple offspring of the same sex does not run in the family. In the largest study of its kind, researchers have found that whether a family is dominated by boys or girls – or has an equal mix – is simply down to chance.(N=4.7 million individuals). https://royalsocietypublishing.org/doi/10.1098/rspb.2019.2849 20 comments science