When crossing a true-breeding red snapdragon flower with a true-breeding white flower of the same species, we secure all pink offspring. This would seem to support the pre - Mendel view that inheritance is a blending of parental traits. However, Mendel and conventional wisdom agree that "blending" of parental traits is not correct and that particles of inheritance are actually involved because:
1) in the case of incomplete dominance, only radioactive isotope tracers can follow the actual hereditary particles.
2) under blending theory, over many generations only the average (or pink flowers) would remain; there would be no way to get back to pure red and white.
3) it is possible to cross the pink F-1 generation and secure a predictable proportion of pure red and white flowers again, which is not accounted for under the blending theory.
4) None of the above is true.
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Home » Biology » When crossing a true-breeding red snapdragon flower with a true-breeding white flower of the same species, we secure all pink offspring. This would seem to support the pre - Mendel view that inheritance is a blending of parental traits.