What is a F1 and F2?

[wendy9722]

I dont know what it is and how can you tell the difference from the others?:)

Sorry for the stupid question. It shows that I'm still on the newer side.

[Second Hand Pat]

Hey Wendy, my understanding is F1 is the fry from wild parents. F2 is the fry of F1.

[William Palumbo]

Pat's correct. It's something the breeder has to keep track of. One can't tell a F1 from a F2 just by looking at them...Bill

[brewmaster15]

Re: F1's


The F stands for filial...meaning....

Adj.1.filial - designating the generation or the sequence of generations following the parental generation genetic science, genetics - the branch of biology that studies heredity and variation in organisms
parental - designating the generation of organisms from which hybrid offspring are produced
2.filial - relating to or characteristic of or befitting an offspring; "filial respect" parental, paternal, maternal - relating to or characteristic of or befitting a parent; "parental guidance"

source..http://www.thefreedictionary.com/filial

[dbfzurowski]

Is it just for fry from a wild pair as Pat suggested?

[brewmaster15]

I know what I am going to say here will go against the grain as far as thoughts on whether the "f" term refers only to wild fish offspring. :) Generally thats what said on fish forums....but its not really accurate. It applies to the offspring of any cross strains as wells. Why do I say that? Because its a term used in genetic labs around the world... I came across it first years ago working in biotech...Mouse genetics... example here...

http://jaxmice.jax.org/support/nomenclature/tutorial.html
If you go thru the tutorial it gives you a good example of the filial system applied in genetics.

Hth,
al