Page 138 - The Manga Guide to Biochemistry

3. What Is Blood Type?

Blood Type

The third mystery is: What is blood type?
This should be fun!

Even if we totally avoid the science of blood
types, they can still be an interesting way
to classify people. For example, in Japan
it’s common to tell someone’s fortune
based on their blood type.

That’s right! A Type A person is often said
to be calm, composed, and serious.

Incidentally, I am an unconventional,
do-it-my-own-way Type B!

My father is a power-hungry Type O, and my mother is a sensitive and moody
Type AB.

Hmm, that makes sense. Children of parents with Type O and Type AB should be
either Type A or Type B but not Type O or Type AB. So if you were to have a sibling,
he or she would be Type A or Type B.

Type O Kumi
Type B
Dad

Mom Type AB Type A
Sibling?!

If I had a younger brother who was Type A, my family would have people of all four
blood types.

But it’s a little strange, isn’t it? Members of one family can have different blood
types, but people from completely different families can have the same blood type!

What exactly is blood type, anyway?

124 Chapter 3