In a certain species of flowering plants with a diploidgenome, four enzymes are involved in the generationof flower color. The genes encoding these four enzymes are on different chromosomes. The biochemical pathway involved is as follows; the figure showsthat either of two different enzymes is sufficient toconvert a blue pigment into a purple pigment.→ white → green → blue → purpleA true-breeding green-flowered plant is mated with atrue-breeding blue-flowered plant. All of the plants inthe resultant F1 generation have purple flowers. F1plants are allowed to self-fertilize, yielding an F2 generation. Show genotypes for P, F1, and F2 plants, andindicate which genes specify which biochemicalsteps. Determine the fraction of F2 plants with thefollowing phenotypes: white flowers, green flowers,blue flowers, and purple flowers. Assume the greenflowered parent is mutant in only a single step ofthe pathway
In a certain species of flowering plants with a diploid
genome, four enzymes are involved in the generation
of flower color. The genes encoding these four enzymes are on different chromosomes. The biochemical pathway involved is as follows; the figure shows
that either of two different enzymes is sufficient to
convert a blue pigment into a purple pigment.
→ white → green → blue → purple
A true-breeding green-flowered plant is mated with a
true-breeding blue-flowered plant. All of the plants in
the resultant F1 generation have purple flowers. F1
plants are allowed to self-fertilize, yielding an F2 generation. Show genotypes for P, F1, and F2 plants, and
indicate which genes specify which biochemical
steps. Determine the fraction of F2 plants with the
following
blue flowers, and purple flowers. Assume the greenflowered parent is mutant in only a single step of
the pathway
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