Question of the Week Podcast

Question of the Week episode

Sun, 16th May 2010

Why do we have different blood groups?

Blood cells (c) Bruce Wetzel & Harry Schaefer

We discover some likely explanations for the different blood groups seen in humans. Is there any reason for having one blood type over another? Do other animals have them too? Plus, we ask: why do horses, donkeys and zebras all make different noises?

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In this edition of Question of the Week

Full Transcript

  • Why do we have blood types?

    I have a question regarding blood types. Why do we, humans have different types of blood, and is it an evolutionary thing? where does it come from and what’s the purpose of it?



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