Question

What is a truebreeding plannt

Answer 1

I don't know much about it but i think it is when  When you crosses 2 plants of the same pure lines parentage, the resulting F1 is termed as true-breeding plants.
True-breeding plants can also be produced by  selfing  (or self crossing) flowers form a pure line plant. When seeds from this fertilization are planted, they will give rise to homologous-homogeneous population. 
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