Bloodline fraction help!

[spore73]

Hello all, I don't how to breakdown factions for family blood line..Here's my question

my great- grandfather is 1/8 native blood
my great-grandmother is 1/2 native blood

my grandfather has no native blood
my grandmother has native blood ..but i cant understand how to get the correct answer

my father claims he's 5/16 native blood.. can somebody help me understand the steps.
In the end i want to know my degree in blood

Thanks in-advance
Jay

 

[Deleted member 4993]

Hello all, I don't how to breakdown factions for family blood line..Here's my question

my great- grandfather is 1/8 native blood
my great-grandmother is 1/2 native blood

my grandfather has no native blood
my grandmother has native blood ..but i cant understand how to get the correct answer

my father claims he's 5/16 native blood.. can somebody help me understand the steps.
In the end i want to know my degree in blood

Thanks in-advance
Jay

So those great grand-parents must be from grand-mother side.

However, it is not clear whether your grand-parents (that you spoke about) are from your maternal or paternal side.

 

[soroban]

Hello, Jay!

Hello, all, I don't know how to breakdown fraction for family bloodlines.

My great-grandfather is 1/8 native blood.
My great-grandmother is 1/2 native blood.

My grandfather has no native blood.
My grandmother has native blood.
. . (But I can't undertand how to get the correct answer.)

My father claims he's 5/16 native blood. . Sorry, this is not true.
I assume your mother has no native blood.

Can somebody help me understand the steps?

In the end I want to know my degree in blood.

In general, an offspring's fraction is the average of his/her parents' fractions.


This branch of your family tree looks like this:

. . \(\displaystyle \begin{array}{ccccccccc} \boxed{GGF} &&&& \boxed{GGM} \\ \frac{1}{8} &&&& \frac{1}{2} \\ \downarrow &&&& \downarrow \\ * & \longrightarrow & \boxed{GM} & \longleftarrow & * && \boxed{GF} \\ && \frac{5}{16} &&&& 0 \\ && \downarrow &&&& \downarrow \\ && * & \longrightarrow & \boxed{F} & \longleftarrow & * & & \boxed{M} \\ &&&& \frac{5}{32} &&&& 0 \\ &&&& \downarrow &&&& \downarrow \\ &&&& * & \longrightarrow & \boxed{\text{You}} & \longleftarrow & * \\ &&&&&& \frac{5}{64} \end{array}\)

Your native name is "Runs With Beer."