Re: HYB: trying to learn some genetics terminology
iris@hort.net
  • Subject: Re: HYB: trying to learn some genetics terminology
  • From: L* M* <l*@lock-net.com>
  • Date: Fri, 22 Feb 2013 08:36:30 -0500
Thanks Chuck. After posting that, I did some more reading and have a bit more understanding of the terminology. Best summary was on the Jackson Laboratory mouse breeding website.
Is there nomenclature for offspring of F1 of one line X F1 of another? Or is that just a plain ol parental cross, with seedlings of that cross called F1?
Same question for (a x b) x c. I'm guessing seedlings from that cross are also just an F1.
I understand backcross and outcross, but are there terms to use for intertwined pedigrees? cousins crossed? nephews/nieces X aunts/uncles? Inbreeding, but is there a term for the offspring (and please don't refer to hillbillies..;-) )? 

On 2/22/2013 6:59 AM, Chuck Chapman wrote:

F2 is always crossing of two F1.

Chuck Chapman

-----Original Message-----
From: Linda Mann <lmann@lock-net.com>
To: iris <iris@hort.net>
Sent: Thu, Feb 21, 2013 9:15 pm
Subject: [iris] HYB: trying to learn some genetics terminology

F1 & subsequent generations.

Online definition says F2 is > The progeny of self-pollinated F1
generation plants

But I've also heard/read F2 used this way:

The F2 (second filial) generation consists of the offspring from

allowing the F1 individuals to interbreed - the grandchildren of the
parental generation.

So what do I call the offspring of two related F1 seedlings that are not
siblings, but are part of my non-line breeding program? i.e., crosses
between half sibs, cousins, etc.

I was assuming that any 2nd generation away from the parental one was an
F2, but looks like that's not the way F2 is normally used.

Linda Mann

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