A flower produces a purple pigment using the biochemical pathway below: gene D g

Question

A flower produces a purple pigment using the biochemical pathway below:

                   gene D                           gene E                               gene G

                 enzyme 1                       enzyme 2                            enzyme 3

white 1 ------------------> white 2-------------------> white 3 -----------------> purple

You crossed a white flower known to be ddEEGG with a white flower of unknown genotype, and the offspring were white. Interpret these results in 1-2 sentences.

Explanation / Answer

Given that the we crossed a white flower known to be ddEEGG with a white flower of unknown genotype, and the offspring were white. This may be because of absence of enzyme 3, which causes all the flowers to be white.

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