関連ワード:
what percent of the population has type o positive blood what percentage of population has type o negative blood what percentage of the population has o positive blood type what percent of the population has type ab blood what percentage of the population has type ab blood what percentage of the population is blood type o negative what percentage of the population has type a negative blood what percent of population has o negative blood type what percentage of the us population is blood type o positive what percent of the population has negative blood type
