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Retic Genetics

Galadriel

Galadriel

New member
I was sitting down at work this morning, reading up on genetics, when my boss walked by.
He saw what I was reading, and thought he`d test my skills a little..
I´ve been trying to figure it out for a while now, but my brain certainly doesn´t seem to want to work with me! :dunce:
So I figured I´d see if any of you guys could help me out a little bit, as I´m very new to this whole color/pattern genetics thing..

The question he asked me was; If I breed a Supertiger het. albino to an albino, what will I get? (Let´s pretend there were 16 eggs)

This may not be too complicated, but i still don´t get it... :shrugs:

Any help would be greatly appreciated :D
 
In order to understand it, you have to break it down into the individual traits and the genes controlling them, and then follow the genes as they are passed from mother and father to the new offspring:

-----

At the Tiger locus there is normal and tiger, + and T.
Tiger is codominant with normal. Because of this:
++ = Normal
+T = Tiger pattern (het normal)
TT = "Super Tiger" pattern (or homozygous Tiger)

At the Albino locus there is normal and albino, + and a.
Albino is recessive to normal. Because of this:
++ = Normal
+a = Normal het albino
aa = albino

-----

So the parents are:
TT +a = Supertiger het albino
++ aa = Albino

Each parent contributes only ONE of its pair to a given offspring.

-----

So you are crossing:
On the tiger locus: TT x ++
As you can see, the TT parent contributes one T, the ++ parent contributes one +. All the offspring will be "+T" which is Tiger patterned.

On the albino locus: +a X aa
As you can see, the one parent will always send an "a" but the other parent can send "a" or "+" so you end up with two possible results: "aa" or "+a" which are equally likely.

-----

When combining these results you get:
50% (+T +a) normal tigers het albino.
50% (+T aa) albino tigers.

(This is NOT how they are teaching it on whatever website you are reading, I'm sure... these are not Punnett squares, it's just a different way to get the same answer.)
 
i am not sure about the super tiger thing cus i really dont get super and ultras but i tihnk all would be het albino anh 50 percent would be albino
 
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