From the given example, a cross of plants with green phenotypes yielded all green plants while some of the crosses of aurea phenotype also yielded the green phenotype.
A mutation that causes a yellowing of leaves in snapdragon plants was discovered in the early 1900s. Plants with this condition, termed aurea, have less chlorophyll than green plants. Crosses between various combinations of green and aurea plantsyielded the following results:
green x green = all green
aurea x aurea = 2/3 green, 1/3 aurea
green x aurea = 1/2 green, 1/2 aurea
If the green allele is designated as G, and the aurea allele is designates as GA, assign genotypes to the phenotypes listed.
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