Basic Genetics





Common color crosses

Iridescent

Colors
Steel Blue =>

blbl

 Royal

Blue => Blbl or blBl

 Green =>

BlBl

 

 

    
Steel

Blue X Steel Blue

Steel Blue X Royal Blue

Steel Blue X Green
X bl bl
bl blbl blbl
bl blbl blbl

100%

Steel
X Bl

bl
bl blBl blbl
bl blBl blbl

50%

Steel - 50% Royal
X Bl Bl
bl blBl blBl
bl blBl blBl

100%

Royal
Royal

Blue X Royal Blue

 Royal

Blue X Green

 Green

X Green
X Bl bl
Bl BlBl Blbl
bl blBl blbl

50%

Royal 25% Steel 25% Green
X Bl Bl
Bl BlBl BlBl
bl blBl blBl

50%

Royal - 50% Green
X Bl Bl
Bl BlBl BlBl
Bl BlBl BlBl

100%

Green

 

Lets
now look at a little more involved cross... we cross two fish
that are royal blue / geno melano (m)

Royal geno
melano (Blblm+) x Royal geno melano (Blblm+)
X Bl m Bl + bl m bl +
Bl m BlBlmm BlBlm+ Blblmm Blblm+
Bl + BlBl+m BlBl++ Blbl+m Blbl++
bl m blBlmm blBlm+ blblmm blblm+
bl + blBl+m blBl++ blbl+m blbl++

37.5% Royal with 50% geno melano

18.75% Green with 50% geno melano

18.75% Steel with 50% geno melano

25% Melanos with 50% of them having Royal iridocyte, 25% Green
and 25% Steel

The "+" sign is used to designate the normal state
ie: no melano

The small "m" is used to show that melano (m) is
recessive to the normal wild state (+).

Anything with two "m"'s should be a black with the
corresponding iridocyte color

 

Now
we add the double "dt" geno to it

Royal geno
melano/dt (Blbl+m+dt) x Royal geno melano/dt (Blbl+m+dt)
X Bl + + Bl m + Bl + dt Bl m dt bl + + bl m + bl + dt bl m dt
Bl + + BlBl++++ BlBl+m++ BlBl+++dt BlBl+m+dt Blbl++++ Blblmm Blbl+++dt Blbl+m+dt
Bl m + BlBlm+++ BlBlmm++ BlBlm++dt BlBlmm+dt Blblm+++ Blbl+m Blblm++dt Blblmm+dt
Bl + dt BLBl++dt+ BlBl+mdt+ BlBl++dtdt BlBl+mdtdt BlBl++dt+ Blbl+mdt+ Blbl++dtdt Blbl+mdtdt
Bl m dt BlBlm+dt+ BlBlmmdt+ BlBlm+dtdt BlBlmmdtdt Blblm+dt+ Blblmmdt+ Blblm+dtdt Blblmmdtdt
bl + + blBl++++ blBl+m++ blBL+++dt blBl+m+dt blbl++++ blbl+m++ blbl+++dt blbl+m+dt
bl m + blBlm+++ blBlmm++ blBlm++dt blBlmm+dt blblm+++ blblmm++ blblm++dt blblmm+dt
bl + dt blBl++dt+ blBL+mdt+ blBl++dtdt blBl+mdtdt blbl++dt+ blbl+mdt+ blbl++dtdt blbl+mdtdt
bl m dt blBLm+dt+ blBLmmdt+ blBlm+dtdt blBlmmdtdt blblm+dt+ blblmmdt+ blblm+dtdt blblmmdtdt

Anything with two "m's" should be a black with the

corresponding iridocyte color

Anything with two "dt's" will show a double tail

As you can see... it is pretty easy to figure out the basic
genetic outcome if you have an idea about the parents gentic
makeup

Next I'll add in the a fish with geno cambodian "+c"

For
a look at this cross with geno cambodian (c) added click here...it
gets big!

 

Non-Iridescent
Colors
Yellow => RR / cc / nrnr

Red => RR / ++ / ++

RR
=extended red, cc = Cambodia, nr
= non-red

++
= normal(wild) state

Yellow
X Yellow (f1...)
Yellow X Red (f1)
Red X Red (f1...)
X R c nr
R c nr

RR/cc/nrnr

100%
Yellow

X R + +
R
c nr

RR/c+/nr+

100%
Red with

Yellow
& Cambodian Genotype

X R + +
R + +

RR/++/++

100%
Red
Yellow
X Red (f2 crosses) RR/c+/nr+

 

X R + + R + nr R c + R c nr
R + + RR/++/++ RR/++/+nr RR/+c/++ RR/+c/+nr
R + nr RR/++/nr+ RR/++/nrnr RR/+c/nr+ RR/+c/nrnr
R c + RR/c+/++ RR/c+/+nr RR/cc/++ RR/cc/+nr
R c nr RR/c+/nr+ RR/c+/nrnr RR/cc/nr+ RR/cc/nrnr



Results would be dispersed in the following
ratios...

Red (9) Chocolate
(3) 		Red Cambodian (3) Yellow (1)

 
Yellow
parent RR/cc/nrnr to Yellow
X Red young (PF1 crosses) RR/c+/nr+
X R + + R + nr R c + R c nr
R c nr RR/c+/nr+ RR/c+/nrnr RR/cc/nr+ RR/cc/nrnr

Results would be dispersed in the following
ratios...

Red (1) Chocolate
(1) 		Red Cambodian (1) Yellow (1)
Red
parent RR/++/++ to Yellow X
Red young (PF1 crosses) RR/c+/nr+



X R + + R + nr R c + R c nr
R + + RR/++/++ RR/++/+nr RR/+c/++ RR/+c/+nr

Results would be all reds...



.
Red
parent RR/++/++ to Red Cambodian
young (PF2 crosses) RR/cc/++

 

X R c +
R + + RR+c++

Results would be all reds...

 
Red
parent RR/++/++ to Chocolate
young (PF2 crosses) RR/++/nrnr

 

X R + nr
R + + RR+++nr

Results would be all reds...

 
Yellow
RR/cc/nrnr to Chocolate young
(PF2 crosses) RR/++/nrnr

 

X R + nr
R c nr RRc+nrnr

Results would be all chocolates...

assuming the chocolate did not posess a single "c"
gene.

 

Yellow RR/cc/nrnr to Red Cambodian
young (PF2 crosses) RR/cc/++

 

X R c +
R c nr RRccnr+


Results would be all Red Cambodians...

assuming the Red Cambodian did not posess
a single "nr" gene.