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Question

In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).
What is the phenotypic ratio and genotypic ratio of the above cross shown in (ii)?

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Solution

The phenotypic ratio of the above cross will be 3:1, that is 3 axial flowers and 1 terminal flower.
The genotypic ratio of the above cross will be 1:2:1, that is 1 homologous plant with axial flowers (AA), 2 heterozygous plants with axial flowers (Aa) and 1 homologous plant with terminal flower (aa).

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