1. Multiple choice questions VI

Select the correct option
 
Mendel crossed RRYY (round yellow) with rryy (wrinkled green). F₁ were all RrYy (round yellow). Selfing F₁ produced F₂ with a 9:3:3:1 phenotypic ratio.

In F₂, how many plants out of 16 are expected to be round green?
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