Kraig Biocraft Laboratories Inc (KBLB)

[jealmc79]

“As far a the notion that "breeding won’t all have the same desired characteristics of the parents though", that too is nuanced. You might be right if the the phenotype wasn't from a dominant genotype. For instance, if one genotype was "AA" and the other line was "aa" You would have all genotypes being heterozygous (Aa). If that genotype translates to the desired phenotype, then 100% all offspring would have the desired trait. This is just a simplified example.”

If you breed aa to aa you have a purebred line.
Same with AA to AA.

AA x aa = 100% Aa hybrid

Aa hybrid x Aa hybrid = 25%AA 50% Aa 25%aa

So no, the hybrid offspring will not all have the same traits as the original hybrid.

Also, a 4 line hybrid wouldn’t be possible if the original hybrids were sterile. Alleles be damned.